An elite squad of Norwegians destroy a power plant in 1943 that the Nazis may have been using for nuclear weapons research.

Flydubai Flight 981 enters a rapid descent and crashes nose-first at Rostov-on-Don Airport in Rostov-on-Don, Russia, after aborting its second landing attempt in poor weather conditions.

Moments before Pacific Southwest Flight 1771 crashes on a cattle ranch in California, gunshots are heard in the cabin.

When a twin-engine jet careens off the runway in Kentucky, investigators must determine why the plane failed to take off.

In 1991, a Boeing 737 operating as United Airlines Flight 585 suddenly rolls into a dive and crashes within eight seconds, killing all 25 people on board.

When Germanwings Flight 9525 crashes in the French Alps, investigators discover shocking truths about the co-pilot's mental health.

On 27 November 2008, an aircraft on a post-maintenance test flight operating as XL Airways Germany Flight 888T stalls and crashes into the Mediterranean Sea off the coast of France, killing all seven people on board.

Cruise among the icebergs of Greenland and the Canadian High Arctic aboard the expedition cruiser Ocean Endeavour.

Experience romance on a mega cruiser that pampers its guests with the best of Italian design and American convenience.

Set a course for breathtaking sights on Koningsdam's 15-day voyage from Amsterdam to the northern tip of Norway.

Take a river tour through some of Europe's greatest cities--Budapest, Vienna, and Amsterdam--on Viking Longship Gefjon.

Japan's largest cruise ship brings East and West together on a cruise featuring cherry.

One of Holland America Line's largest cruisers makes its debut in the Caribbean, highlighted by a visit to an exclusive private island resort.

Hector Rail's trains haul timber to a pulp mill in Ostrand, Sweden on some of the most difficult railways in the country.

A trip through Lima details the voyage's breathtaking scenery and engineering challenges.

VIA Rail's passenger train travels between Vancouver and Toronto on four-day, four-night journey that cater to everyone.

The maiden voyage of the Oasis of the Seas, the largest, most revolutionary cruise ship in the world.

The Norwegian Epic is a billion-dollar showboat with more than 20 bars and restaurants and pool decks that transform into nightclubs.

The world's top cruise ship, the Crystal Serenity visits Sydney harbor, the port of Melbourne, Bali, a large-scale furniture load in Semarang, Indonesia and the port of Singapore.

Costa Diadema's seven-day cruise around the Mediterranean offers Italian delights to its passengers and challenges to its captain and crew.

Norwegian Joy sails amid icebergs in Alaska's Inside Passage, treating guests to glaciers, humpback whales, and the largest zip line in the world.

The C-5 Galaxy is the U.S. Air Force's largest and most powerful plane; follow its mission to Afghanistan.

Travel aboard the colorful trains of the State Railway of Thailand and explore the famed Death Railway; the trains travel through ancient areas, historic tunnels, and raging rivers.

The world's latest, most-advanced expedition cruise ship Roald Amundsen whisks passengers on an adventurous voyage to Antarctica.

The Sky Princess carries passengers from Fort Lauderdale, Florida, to three Central American stops.

The highly-specialized North Rail Express container train travels from Narvik to Oslo, delivering cargo of fish as quickly as possible.

Two magnificent journeys with New Zealand's KiwiRail: the TranzAlpine, a five-hour journey across 223 kilometers, and Northern Explorer, an 11-hour trip through five unique regions of the North Island.

The Paul Gauguin offers five-star luxury while sailing near the coral reefs, mountainous islands and tropical playgrounds of French Polynesia.

New luxury liner Le Soleal navigates the uncharted waters of Indonesia to give her passengers one-of-a-kind encounters at exotic destinations.

Follow mega cruiser Regal Princess as she whisks guests to Germany, Russia, and Scandinavia in style.

We follow passengers and crew aboard Viking Star during its two-week tour from Barcelona to its home port in Bergen, Norway.

Engineers grapple with an apartment building, ripped apart by a man-made canyon; the Gateway Arch takes shape in St. Louis; an unpromising plot in Copenhagen, Denmark, is transformed by a gleaming new triangular office.

Alien port authority in Belgium; ultrathin skyscraper in Manhattan; hanging museum in Scotland.

The American Museum of Natural History in NYC gets a cave-like extension; an arts center inspired by migrating birds is built on a lake in China; Boston University gains a fossil-free, Jenga-like tower.

A 1.2-million-square-foot office building balances precariously on a 39-foot wide base in Chicago; a building named Pterodactyl lands on top of a Los Angeles parking garage; the world's longest suspension footbridge.

A sculptural high-rise with rippling balconies breaks the mold in Chicago; Mammoth machines bore 26 miles of tunnels for an underground railroad beneath London's city streets.

Visiting Australia's One Central Park, the Oslo Opera House and the California Academy of Sciences in San Francisco to reveal their architectural secrets.

A ride on the Panama Canal Railway reveals the track repairs, engine overhauls and dangerous searches involved in keeping vital freight runs rolling.

A crew and its massive air crane helicopter haul millions of pounds of timber while battling the elements and handling emergency repairs.

A ride through Eastern Europe aboard heavy-hauling trains shows the logistical and mechanical challenges of making a multimillion-dollar cargo delivery.

Following a million-dollar freight run across four European countries and meeting the drivers, engineers and maintenance teams who keep the train running.

A dazzling new 1400 foot tapering skyscraper is built right next to New York's Grand Central. A curving wine museum requires ingenious engineering in Bordeaux, France. And possibly the world's most glamorous parking garage.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee; a decaying Amsterdam crane track transforms into glass offices; a needle-thin tower stacks 28 apartments onto a 21ft-wide plot in Melbourne, Australia.

Paying tribute to the brave, gravity-defying design of the U.S. National Medal of Honor Museum; traveling to Singapore for a look at a leaning tower of gambling, then exploring a New York City office building that lets the sun shine through.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

On inadequate foundations, San Francisco's MoMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five-acre park is created.

A London railway station; giant Singapore biodomes; eye-catching hospital in Las Vegas.

Visiting London's Gherkin, Seattle's Evergreen Point Floating Bridge and Lyon's Musée des Confluences to uncover how and why they were built.

In 1999, EgyptAir Flight 990 crashed into the Atlantic Ocean while flying from New York City to Cairo, killing all 217 people on board; the cause of the crash is disputed.

Northwest Airlines Flight 255 crashes shortly after take-off in Detroit in 1987; a fatal preflight error caused the second-deadliest plane crash in the U.S. history.

Three crews experience the same devastating event; with radically different outcomes when an engine falls off their commercial airplane.

When a USAF stealth bomber crashes after takeoff, investigators search for a reason.

When a turboprop stalls and crashes into a North Carolina forest, investigators resort to a risky test flight-and uncover an industry-wide safety problem.

A plane with members of the Manchester United football team crashes while heading home from Yugoslavia, killing 23 aboard.

On 28 December 1978, the crew of United Airlines Flight 173 are preoccupied with a landing gear problem as the aircraft circles in a holding pattern in the vicinity of Portland, Oregon; it runs out of fuel and crashes in a sparsely populated area.

Stories of historic Black struggle for equality in maritime combat; an enslaved powder boy who served during the French and Indian War; a Civil War gunner; the first African American to command a vessel with a fully integrated crew: Hugh Mulzac.

A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

A look at key naval battles that have taken place in the Persian Gulf over the last 50 years and the warships involved, from both sides of the conflicts.

A look at the smallest ships of war and the major roles they've played over the centuries, including the 1776 gunboat built to stop a British invasion and the HA-19 sub.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Exploring maritime heroes who left their mark on history through their bravery and skill, including Larry Chambers, Ernest Evans, and Robert Smalls.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

It is considered the largest sea battle in history: the Battle of Leyte Gulf in WWII was three days of ingenious strategy and white-knuckle combat between warships, aircraft and kamikazes.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

The rapid evolution of drones and how they're changing the future of aviation.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

Innovative engineering allows the P-38 Lightning to fly faster and climb higher than any other WWII warplane; a twin-propeller fighter with heavy armaments packed into its nose, the P-38 becomes one of America's premiere combat planes during the war.

The AH-64 Apache, one of the most heavily fortified and well-armed helicopters ever built.

The North American F-100 Super Saber, also known as the Hun, becomes a supersonic powerhouse after initial difficulties; it was used primarily in the Vietnam War.

The 35-year history of the UH-60 Black Hawk.

A look at how the C-47 evolved from passenger plane to a transport aircraft and flying hospital in WWII and years later as a gunship in Vietnam.

Stories of fighter aircraft and deadly combat, including dogfights with the P-38 Lightning and Messerschmitts over Nazi Germany, told through rarely seen battle footage and first-hand accounts.

The history of the longest serving bomber in the U.S. military: the B-52 Stratofortress.

The 50-year evolution of the Army's top transport helicopter, the CH-47 Chinook.

The history of the B-1 Lancer reveals how the Cold War bomber evolved to become one of America's most effective military aircraft.

A countdown of the most influential and impactful military planes of the Cold War, from America's B-2 to the Soviet's MiG-15.

The history of the F-16 Fighting Falcon and how it became the U.S. Air Force's most versatile plane.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Home to some of America's highest mountains; Mount St. Helens.

An aerial tour over America's Great Plains tracks the prairies, farms, oilfields and wildlife.

Vast cotton fields, Gulf coast beaches; famous Civil Rights marches; NASCAR's most dangerous track; steel factories.

White sand beaches; Blue Ridge Mountains; Charleston's Rainbow Row.

A cross-country aerial journey over America's most majestic and unique roadside attractions.

An aerial tour over New England captures its beauty while celebrating its rich history; from the Massachusetts harbors, where Americans rebelled against the British, to the autumn colors that blanket the mountains of Vermont.

An aerial tour over Kentucky reveals a state of racetracks, country music highways, bourbon distilleries and a history of feuds and traditions.

After taking off from Taiwan, a China Airlines 747 suddenly disappears from radar and crashes, killing 225 people.

A 747's cargo door opens at 23,000 feet, causing an explosive decompression that ejects nine passengers from the plane.

When Air Transat Flight 236 runs out of fuel over the Atlantic, its pilots desperately try to keep their Airbus A330 in the air until they reach land.

The U.S. Aviation Weather Center in Kansas City, Miss.; the importance of accurate weather forecasting to the aviation industry.

On 10 January 2000, Crossair Flight 498 crashes just two minutes after takeoff from Zürich, Switzerland, while heading for Dresden, Germany, killing all 10 people on board.

A team of experts investigates in detail the carnage of a cargo plane; an anonymous tip helps explain why a cargo plane crashed just moments after taking off from Miami.

Relying on instinct rather than the rule book, three flights end in tragedy when crews improvise on their final approach.

A passenger ferry sinks after crashing into rocks off the coast of a Greek island, killing 82; it leads to a shocking investigation.

A commuter turboprop crashes onto hilly terrain in New Zealand; the search for answers inevitably leads to the cockpit.

When a modified WWII fighter plane crashes into the crowd at a Nevada air show, investigators struggle to find the cause.

A quick trip from Washington D.C. to Ohio in 1994 turns deadly when pilots of a twin-engine turboprop attempt a risky landing.

The two-man crew of a UPS cargo jet must attempt an emergency landing when a fire in the cargo hold fills their cockpit with smoke.

Investigators try to find the cause of two similar air crashes that happened nearly 12 years apart.

A false warning in the cockpit triggers a series of pilot errors, sending a commuter plane crashing by the runway of an Amsterdam airport.

Joining NTSB and military experts as they work together to uncover how a fighter jet could collide with a civilian flight.

Landing at one of the world's most challenging airports, a passenger plane comes in like a fighter jet and crashes, killing 51 of the 71 people aboard.

On Jan. 3, 2004, Flash Airlines Flight 604 banks to the right just after takeoff and crashes into the Red Sea, killing all 148 people on board.

The Empire State of the South; ancient Mound builders to the Cherokee Indians.

Oregon's Cascade Mountains; Columbia River waterway.

A day-long aerial tour of the New England city of Boston in Massachusetts; where Americans first rebelled against Britain by dumping chests of tea into the harbor and where rock band Aerosmith first made it big.

A look at America's landmarks, including a view of bears catching clams in Alaska's rivers; a high-flying tour reveals Alaska's call of the wild spirit that has lured adventurers and dreamers north for centuries.

An aerial tour over America's coastlines explores the visual splendor and rich history of the nation's varied borders.

An amazing aerial tour over Utah reveals a state full of otherworldly landscapes and landmarks, including a history steeped in Mormonism, pioneering tragedy, and Olympic glory.

Taking flight for a bird's eye tour of America's rivers, lakes and canals.

Beauty of the Empire State; Central Park; tallest skyscrapers; mighty rivers; 17th century explorer Henry Hudson.

Ancestral home of the Abenaki Indians; Henry David Thoreau's first book; Mount Monadnock; New Hampshire is seen from the air.

A flight over Missouri explores the Show Me State's towering monuments, mighty rivers and spectacular Ozarks.

A small state has a lot of history.

The birthplace of the Star Spangled Banner; sites Harriet Tubman, Babe Ruth and the DuPont family made their marks on history.

Three FedEx employees must regain control of their plane when a coworker attacks them in midair.

A Russian passenger jet crashes into the Volga River, killing almost everyone on board; the incident turns into a national tragedy when rescuers discover the plane carried some of the country's famous athletes.

A pilot's decision to let his 15-year-old son fly has disastrous consequences on a commercial flight.

JFK Jr. disappears on the way to Martha's Vineyard; a captain loses his bearings and crashes over the Red Sea; pilots crash a plane over Indonesia.

A complex recovery operation is launched to find out if a 747 which disappeared into the Indian Ocean was carrying illegal weapons.

A Boeing 737 leaving Panama City crashes into one of the most remote and treacherous jungles on the planet.

A massive explosion tears a hole in a 747 over Hawaii, and the trail of clues ultimately leads investigators to a catastrophic short circuit.

While landing at a notoriously tricky Alaskan island airport, the pilots of a twin turboprop can't stop their plane.

After a DC-8 cargo plane with only three working engines crashes on takeoff in Kansas City, investigators uncover a flaw in the pilots' training.

Two float planes collide midair near an Alaskan waterfall. One shatters; the other crash-lands intact. With no warning before impact, investigators use wreckage clues and 3D tech to uncover how-and why-the deadly crash occurred.

Solving the crash of China Airlines Flight 676 hinges on 11 baffling seconds when neither pilot controls the airplane.

With flames emerging through the cockpit floor, the pilots of Pilgrim Airlines 458 manage a heroic landing on a frozen Rhode Island reservoir.

A flight over Massachusetts explores the sites; the Bay State, from Martha's Vineyard to the Bambino's Curse, seen from the air.

America's most remarkable natural wonders are explored including the Grand Canyon, the Great Lakes and more.

A high-flying tour of Connecticut; exploring the safe harbors, buildings and rich maritime history; the home state of Mark Twain, PT Barnum and Katharine Hepburn; the exclusive Gold Coast, the Thimble Islands and the historic cities.

From battlefields where hundreds died to Beale Street where musical legends were born.

An aerial view of Arkansas, where settlers' westward journeys began and the scene of Bonnie and Clyde's most serious crime; a view of the land of raging rivers, vast wilderness and legends of the Wild West.

The Wright Brothers gave the state its slogan "First in Flight"; civil rights leaders in Greensboro; NASCAR.

An aerial view of New Mexico; exploring its landscapes and landmarks, while revealing its many legends and secrets.

An aerial tour over the places made famous by America's most influential men and women.

A view of Idaho from the air reveals a state filled with agricultural fields, lands untouched by human hands, and riches in the form of gold, ski resorts and spuds.

A flight over Northern California explores ancient forests, timeless coasts, golden cities and the region's pioneering spirit.

Three hundred people are killed in one of the deadliest aviation accidents of all time after a fire breaks out on board Saudia Flight 163.

With rising young football star Emiliano Sala on board, a chartered Piper Malibu suddenly disappears from radar over the English Channel.

When Ethiopian Airlines Flight 302 crashes shortly after takeoff, the catastrophe leads to the grounding of the entire Boeing 737 MAX 8 fleet.

Just after takeoff from Honolulu, TransAir Flight 810 loses power and ditches in the Pacific. Both pilots survive, blaming dual engine failure — but when the Boeing 737 is recovered, the wreckage reveals a different cause behind it.

Air Tahoma Flight 185, an overnight cargo flight from Memphis, Tenn., approaches its final destination, Cincinnati.

Three flight crews face impossible odds: a Boeing 707 loses engines over the Alps as fire spreads, Air Astana 1388 goes out of control over Portugal, and a bomb on PA 434 severs control cables and blasts a hole in the fuselage.

Air Tahoma Flight 185, an overnight cargo flight from Memphis, Tenn., approaches its final destination, Cincinnati.

Airplane crashes involving high-profile passengers put added pressure on investigators.

Air Tahoma Flight 185, an overnight cargo flight from Memphis, Tenn., approaches its final destination, Cincinnati.

In one of the world's busiest airports, a large passenger plane crashes into a smaller one; a 1986 midair crash between planes near Los Angeles brings attention to disturbing congestion at airports.

Three aviation disasters are all linked to breakdowns in vital security measures.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

Near the end of its flight, Continental Express Flight 2574 suffers wing damage and goes into a dive falling out of the sky.

When an American cargo plane crashes moments after takeoff, investigators uncover a systemic problem with aircraft maintenance.

A Boeing 767 crashes miles from a South Korean runway; the investigation leads to contradicting stories between the surviving pilot and air traffic control.

Almost immediately after taking off from Madrid International Airport, Spanair Flight 5022 banked to the right, slammed into a creek and burst into flames.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing; American 1572 hits a storm and loses both engines amid a tower shutdown.

An examination of three crashes that occurred when pilots battled against their sophisticated aircraft.

A private jet attempting to compensate for a late approach to the airport, slams into an Ohio apartment building just a couple of miles from the runway.

A high-stakes demonstration flight in Indonesia turns catastrophic when a Russian jet slams into a mountain.

Pilots are prepared to cope with a range of emergency scenarios, but failures in training can lead to catastrophe in the cockpit.

A look at three deadly air disasters that are caused by misunderstandings between pilots and air traffic controllers.

Three mysterious accidents send investigators hunting for clues; in the end, all three trails lead back to the same source -- the fuel tank.

Confused, flying blind and lost in the dark, three crews lose sight of the horizon and fall into the same deadly trap.

Three flights end in tragedy after miscommunication mix-ups and personality clashes; Investigators try to unravel what went wrong.

Investigators face a mystery when Varig Flight 254 disappears without a trace over the jungles of Brazil.

Gordon Welchman's top-secret work helped defeat the Nazis and impacted modern codebreaking.

The remarkable story of Hitler's last will and testament, from his surprising discovery to the family dispute he triggered and the new ideas he offers about the Führer.

Dan Snow follows treasure hunters as they hunt for a missing train full of gold; Dan carries out his own investigation into this extraordinary story, one that leads all the way to Adolf Hitler himself.

For the first time in 70 years, forensic archaeologists have been granted access to the Treblinka death camp, which suddenly disappeared in 1943, along with some 900,000 victims.

Auschwitz survivors explore the railways' part in the Nazis' mass murder.

Gordon Welchman's top-secret work helped defeat the Nazis and impacted modern codebreaking.

Air Tahoma Flight 185, an overnight cargo flight from Memphis, Tenn., approaches its final destination, Cincinnati.

A bomb explodes on Pan Am Flight 103, causing the aircraft to disintegrate in midair and the wreckage of the aircraft to crash into the Scottish town of Lockerbie, killing all 259 people on board and 11 people on the ground.

A look at the fate of United Airlines Flight 232 which crashed into Sioux City's runway in 1989; it caused a subsequent explosion that left 111 people dead.

Seeing how international investigative teams must overcome differences to solve controversial plane crashes.

Investigating the 2009 crash of Colgan Air Flight 3407; the plane stalls at low altitude and dives into a residential area near Buffalo, N.Y.

Moments after takeoff, a plane sustains electrical failures and crashes in the Florida Everglades, killing 110 people on board.

A crew of 2,200 on the Symphony of the Seas tends to more than 5,500 passengers as they sail to ports in Spain, France and Italy.

Visit Stonehenge, kiss the Blarney Stone and hunt for Nessie on a magical tour of the British Isles, aboard Marina.

Sailing from Chile and Peru to Ecuador and Costa Rica, the luxurious Seven Seas Explorer cruise ship is full of marble, granite and almost 500 chandeliers.

We hop aboard a seven-day cruise to the Canary Islands and Madeira aboard the first large liner to run purely on cleaner-burning liquefied natural gas.

Facing Australia's fierce heat, Celebrity Solstice provides guests with views of waterfalls, jumping crocodiles, koalas and the Great Barrier Reef.

The only cruise ship designed specifically to navigate the treasures and dangers at the southern tip of South America.

Passengers on Ecuador's Tren Crucero experience a dangerous rail journey, which includes tropical jungles, volcanoes and the Devil's Nose.

Switzerland's Bernina Express is one of three railway lines on the UNESCO World Heritage list; it navigates 55 tunnels and nearly 200 viaducts and bridges.

The Ghan takes passengers on a three-day, two-night journey through Australia; the Pichi Pichi Railway offers passengers a trip on an original steam locomotive train.

Le Boreal is built to take on the demanding waters of the Southern Ocean.

MSC's biggest cruise ship navigates tight Mediterranean harbors, offering a brand-new water park, classic excursions and Cirque du Soleil at Sea.

Filled with big toys, guests fly the trapeze, surf and skydive without ever leaving the world's most innovative cruise ship.

This 50-year-old ocean liner offers off-season Baltic tours, battling unpredictable weather to deliver one-of-a-kind experiences.

Take a cruise where the guests choose the ports to visit and the captain and crew work overtime to make it happen.

The CP-140, a spy plane built to protect Canada and her coastlines from unseen enemies is upgraded with the latest technology.

South Africa's most luxurious train - Rovos Rail - travels from Pretoria to Cape Town in classic cars pulled by a series of steam, diesel and electric locomotives.

The new Viking Sea cruise ship whisks guests away on a journey across the Arctic Circle and into the heart of Norway.

The Carnival Vista is the new flagship for one of the world's largest cruise lines, carrying more than 4,600 passengers and boasting 10 restaurants, nearly 2,000 staterooms and a crew of 1,400.

Japan's Tokaido Shinkansen, known as the bullet train, operates on a dedicated railway line at up to 177 mph.

A trip aboard one of the world's most expensive and sought-after train rides details the journey for both passengers and crew.

Royal Clipper is the largest sailing cruise ship in the world, celebrating tall ships of the 19th century while offering modern-day service for its guests.

Azamara Journey travels the rivers of Southeast Asia, delivering passengers to exotic cities and hidden treasures that larger cruise ships cannot reach.

Cruise among the icebergs of Greenland and the Canadian High Arctic aboard the expedition cruiser Ocean Endeavour.

Experience romance on a mega cruiser that pampers its guests with the best of Italian design and American convenience.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Architects and engineers build an eco-friendly convention center on Vancouver's waterfront, a lift bridge in Bordeaux and a cocoon-shaped skyscraper in Tokyo each with unique challenges like marine habitats and massive spans.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

A towering bridge in France; upside-down hotel in China; Italy's forest into the sky.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

The inside stories behind a new, horseshoe-shaped complex in Rotterdam, a rock-shaped opera house in China and a makeover of the British Museum.

Mike works with repair and construction teams at Dreamworld, Australia's largest theme park, after a cyclone caused $4M in damage; they fix scream machines and finish a $50M expansion featuring the world's first triple switch rollercoaster.

Host Mike Davidson assists on a multi-million-dollar tunnel-boring project underground in Toronto.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Mike helps fix the machines that keep one of the United States' biggest ports moving; he assists a team in moving a 3-million pound crane.

A museum building bends 1,100-glass tubes to form a facade and tunnels below the water table; a vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

Peek inside a cloud-inspired library in Canada that's built over a live railway; see how clever engineering helped a huge Seattle skyscraper go up without harming its iconic neighbour, then cross an Australian bridge that floats above a busy river.

The engineering secrets behind a mobile research station in Antarctica, a gravity-defying concert hall on the Canary Islands, and a rotating boat lift in Scotland.

Building an eco-friendly visitor center in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

Air Tahoma Flight 185, an overnight cargo flight from Memphis, Tenn., approaches its final destination, Cincinnati.

Investigators struggle to determine why a 757 strayed off course during its final approach to a Colombia airport and crashed into a mountain.

When a British tycoon and his family die in a 2017 Australian seaplane crash, investigators spend over two years searching for the reason behind the tragedy.

A plane carrying Mexico's interior minister crashes into Mexico City's financial district.

A twin-engine jet slams into an Ohio apartment building in a tragic perfect storm, raising questions about speed, power, and fatigue; a turboprop crash exposes an industry-wide issue; at Guantánamo Bay, a cargo plane goes down near the Cuban border.

When a 737 careens off the runway in Indonesia, investigators uncover a shocking explanation for the crash.

A look at the fatal consequences that can occur when a fire breaks out on a plane; three flights that erupted in flames and the investigations that changed aviation forever.

On July 11, 1991, the crew of Nigeria Airways Flight 2120 unsuccessfully tries to return to the airport after a burst tire creates an in-flight fire which causes 247 Nigerian pilgrims and 14 crew to perish.