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.

The fighter plane that helped turn the tide of World War II; the P-51 Mustang.

The massive AC-130 provides unparalleled close air support to U.S. and allied ground troops.

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

During the Vietnam War, the United States needed a helicopter that could defend itself; the AH-1 Cobra, the world's first pure attack helicopter.

Electronic warfare aircraft; the EA-6B Prowler; the EA-18G Growler.

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.

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

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

Exploring behind-the-scenes of design and construction of revolutionary buildings in Spain, New York and a university campus in Florida.

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.

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.

At Cirque Du Soileil in Las Vegas, Mike embeds with the talented teams that maintain the amazing machines behind Cirque Du Soleil's stage shows.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

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

With wildfire season ahead, Mike works with an aerial firefighting company as they fix and convert aircraft into firefighting machines, including the transformation of a 1960's C130 plane from aged military aircraft into a stateofthe art waterbomber.

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

Leading aviation experts are confronted with a shocking theory as they investigate one of the greatest aviation mysteries of all time.

When an African airliner mysteriously crashes, Namibian investigators have to rule out a host of possible causes before reaching a conclusion.

A Northwest Airlines flight cruises above the Bering Sea before problems develop and pilots must make an emergency landing in Anchorage.

An air traffic controller's mistake causes a Boeing 737 to land on a runway already occupied by another aircraft.

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

Three planes fatally out of balance force investigators to question every calculation; it's a flight risk that's entirely preventable, and yet repeated disasters reconfirm the need for critical backup systems.

The crash of a commuter flight to Detroit leads investigators to a cause the industry has known about for years.

Atlantic Airways Flight 670 careened off the runway and became engulfed in flames.

If pilots aren't prepared when the runway is in sight, a landing can quickly become a tragedy.

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.

Devastating failures in the air put pilots to the test and shine a light on three feats of flying.

Five aviation disasters and the changes they have forced air-traffic controllers to make.

Northern state's green forests; red-painted barns and sugar maples.

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.

A sky-high tour over Minnesota reveals the state's ancient, glacial landscapes and tells the stories of the pioneers who helped build the nation.

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

Explore the forests, shores, bridges and tunnels of one of American's 13 original states, New Jersey.

Louisiana's wetlands and underwater oil fields.

A journey over America's western landscape featuring.

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.

An aerial exploration of Wyoming reveals the Cowboy State's controversial history while highlighting its breathtaking canyons and volcanic formations.

An aerial tour of New York City, spanning the city's five boroughs, capturing man-made and natural wonders; revealing the ways its citizens live, work and play.

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

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

A secret British regiment in 1942 led a daring raid on a Nazi-occupied Libyan harbor.

The Allies' heroics keep Hitler from advancing; the Red Army arrives in Berlin.

Incredible footage, colourised for the first time, chronicles the final days of the Third Reich and the brutal battle for Berlin, though German defeat looked certain. Nazi soldiers persisted fighting despite the inevitability of their downfall.

New colourized footage and testimony reveals the cost of victory, the aftermath of war and the liberation of the camps and the destruction of Germany.

Hitler's final days are revealed through recently discovered eyewitness accounts.

A secret British regiment in 1942 led a daring raid on a Nazi-occupied Libyan harbor.

The Allies' heroics keep Hitler from advancing; the Red Army arrives in Berlin.

Incredible footage, colourised for the first time, chronicles the final days of the Third Reich and the brutal battle for Berlin, though German defeat looked certain. Nazi soldiers persisted fighting despite the inevitability of their downfall.

New colourized footage and testimony reveals the cost of victory, the aftermath of war and the liberation of the camps and the destruction of Germany.

Hitler's final days are revealed through recently discovered eyewitness accounts.

A small state has a whole lot of history.

Alpine valleys; Rocky Mountains; Denver's towering skyscrapers.

One of the most beautiful states on the Atlantic Coast.

Oregon's Cascade Mountains; Columbia River waterway.

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.

Zoom above, and below, some of the Golden State's greatest monuments.

An aerial tour of Florida's peninsula and panhandle celebrates the state's sights, unique history and lavish lifestyles.

An aerial tour of Nevada; the state's deserts, ghost towns, neon cities and Hoover Dam; its history built on epic booms and busts.

A cross-country flight across America reveals the nation's most iconic industries, the people behind them and the stories of how they came to be.

An aerial journey over Ohio showcases the Buckeye State's autumnal vistas, majestic rivers, epic skyscrapers and battlegrounds.

A sky-high tour over Iowa explores its vast stretches of farmland, covered bridges and evolution from wilderness to statehood.

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

A high-flying tour over Illinois; the Windy City, prairies and rivers; the state's dramatic history of great fires, crime and historic battles; Chicago's unique skyscrapers and the Lincoln Tomb.

A soaring tour over Washington, D.C. explores the unique landscape, rich history and colorful story of the Nation's Capital.

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

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.

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.

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 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.

The stories and sights of Hawaii's major islands.

Tour the Wisconsin State Capitol and Milwaukee City Hall, once the tallest building in the world.

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

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

An aerial journey across Montana celebrates the Treasure State's adventure-filled history while showcasing its sprawling farms and rugged terrain.

A coast-to-coast aerial journey across America, visiting locations made famous by movies such as Rocky, Citizen Kane, Forrest Gump and others.

On 1 June 2009, Air France Flight 447 stalls and crashes into the Atlantic Ocean while flying through a thunderstorm, killing all 228 people on board.

The captain of a Navy cruiser must quickly determine if an approaching plane is friendly.

A helicopter carrying oil workers to an offshore drilling platform crashes.

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.

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.

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.

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

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

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

Facing a cascade of failures and a fire on board, a turboprop is just seconds from landing when it flips over and crashes.

The investigation into the 2014 crash of a TransAsia flight uncovers a systemic problem with the airline.

On 13 January 1982, Air Florida Flight 90 stalls at 300 feet altitude, strikes a road bridge and crashes into the Potomac River, killing 78 people.

After touching down, a Taiwanese commuter plane is rocked by a massive explosion, but investigators find no evidence of a bomb on board.

With hidden flaws buried in their navigation systems, three planes suffer catastrophic computer errors that force investigators to dig deep for clues.

A mechanical problem aboard an Air Canada plane turns into an all-out emergency six miles in the air.

A freight train carrying an excess of cargo loses its brakes while descending a mountain causing it to gain speed and derail into a neighborhood killing several people.

On 4 November 2010, shortly after takeoff from Singapore, the number-two engine on Qantas Flight 32 partially disintegrates, causing serious damage to its left wing.

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.

A bomb explodes on Pan Am Flight 103, causing the aircraft to disintegrate in mid-air 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.

On 26 May 1991, the thrust reverser on the number one engine of Lauda Air Flight 004 deploys in flight without being commanded, causing the aircraft to spiral out of control, disintegrate, and crash about 100 miles northwest of Bangkok.

On August 22nd, 1985, 55 people died aboard British Airtours flight 28M when its engine catches fire as it accelerates.

Investigators struggle to understand the unusual flight path and Himalayan crash site of Thai Airways Flight 311.

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.

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

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

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

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

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

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

Passengers are treated like royalty on Indian Railways' Maharaja's Express.

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.

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

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.

The world's most adventurous cruise ship, MS Fram, battles ice-choked fjords of Greenland to visit wildlife and icebergs.

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

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.

The T-38 jet trainer is the ultimate test for any pilot wanting to join the world's elite club of fighter jet pilots.

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

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

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

The Rocky Mountaineer travels across western Canada and over the Rocky Mountains.

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

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.

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

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

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

A helicopter carrying offshore drilling workers crashes into the ocean, leading to an investigation that reveals a fatal flaw in the chopper's design.

A cleaning crew makes a careless error while cleaning a Boeing 757, affecting the plane's computer system and causing it to crash into the Pacific Ocean.

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

In 1999, EgyptAir Flight 990 crashes 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.

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.

Three devastating crashes make front-page news around the globe; the media frenzy puts intense pressure on investigators to uncover the causes.

Mistaken identity and hostile fire over enemy territory are among the many risks that pilots face in war zones around the world.

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

How routine flights can turn catastrophic in mere seconds when the pilots become momentarily distracted; three flights end in a disaster.

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

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.

Three last-resort water landings, all handled differently yet each one crucial to improving the outcomes of ditching on open water.

New evidence may prove that the Bible's tale of the ten plagues of Egypt actually happened.

The discovery of 51 strangely shaped skulls at a 1,600-year-old Hungarian gravesite is changing the narrative of the decline of the Roman Empire.

Engineer Peter James and archaeologist Mark Lehner attempt to solve the mystery of how the Great Pyramid was built.

Researchers examine a 15th-century map depicting the Norse exploration of the New World to determine whether it is a genuine artifact or a clever hoax.

Many experts believe King Arthur was a mythical figure; however, new evidence from ancient sites suggests that the Arthurian legend is rooted in fact, and it may finally answer the question of whether this storied king was real or myth.

In Jordan and Saudi Arabia, two cities, Petra and Hegra, are thought to have been centers of a.

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.

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 pairing of a domineering pilot and an inexperienced first officer has deadly consequences in northern Minnesota.

When an A300 stalls and crashes just before landing in Japan, fears arise about the plane's complex automated systems.

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

The 200-year evolution of the submarine in wartime is examined, told by the designers and engineers behind the machines.

An up-close look at the naval carriers, destroyers, and nuclear submarines of the Cold War.

From tests in the River Thames, to the German's deadly U-boat attacks in World War II, this episode explores the silent threat of submarines.

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.

[EPG Series] 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.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

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

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 history of the KC-135 Stratotanker, the 60-year-old aerial refueler that keeps fighter jets flying.

The Marine Corps' V-22 Osprey.

The F-15 Eagle's conquests in Iraq, Yugoslavia and even space.

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.

Exploring the history of the F-18 and how the U.S. Navy's dual-role aircraft has dominated both the air and the battlefields for over three decades.

The inside story of the Harrier, the world's most famous short takeoff and vertical landing fighter jet.

The history of the B-1 Lancer reveals how the Cold War bomber evolved to become one of Americas 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 inside story of the F-86 Sabre, one of America's first fighter jets, and its epic battles against the Soviet MiG jet during the Korean War and beyond.

A look at the top U.S. military aircraft in America's modern arsenal, including the F-117 Nighthawk stealth fighter, the hybrid V-22 Osprey, and more.

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

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.

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. And the world's longest suspension footbridge.

Visiting the Hearst Tower in Manhattan and Jewel Changi Airport in Singapore to understand how they were built; covering how designers and engineers attempt to create a museum worthy of Salvador Dali in Florida.

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

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

Traveling from Canada to Belgium to the Southern U.S. to examine an eye-popping school, museum and railway station and reveal how they were built.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Host Mike Davidson helps make high-stakes repairs for one of the world's largest open-ocean fish farm operations in Panama.

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

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

Mike helps fix the vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.

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

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.

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.

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

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.

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.

In Sao Paolo, the Himalayas, and on the Norwegian coast, the toughest landings on earth pushed three flight crews.

Pilots of TACA Flight 110 make a remarkable landing on a narrow levee, but investigators must find out why the engines in a brand new plane failed.

On July 17, 2007, TAM Airlines Flight 3054 slides off runway 35L at Congonhas Airport in São Paulo, Brazil, and crashes at high speed into a warehouse adjacent to a petrol station killing nearly 200 people.

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

Natural wonders, manmade marvels, hidden treasures and places of inspiration.

Mississippi from above; the state's unique beauty and history; mighty waters, ancient trails and the birth of the Delta Blues.

A flight over Indiana explores the Hoosier State's rich agriculture, busy highways and basketball legends; exploring the War Memorial and the Angel Mounds of the southwest.

An aerial view of major cities in the United States, including Los Angeles, Miami, Chicago and Boston.

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.

An aerial tour over Dallas and Fort Worth highlights the cities' differences while showcasing their shared contributions to the Texas narrative.

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 harbours, where Americans rebelled against the British, to the autumn colours that blanket the mountains of Vermont.

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

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

The South's famous landmarks, historical milestones and unique culture.

A coast-to-coast tour over America's man-made structures, old and new; the Statue of Liberty and the Golden Gate Bridge.

The engineering secrets behind a massive sky garden in Singapore, the world's most slender tower in Brighton, and a railway station in the shadow of Vesuvius.

A new Olympic and Paralympic museum tests engineers with its trailblazing accessible design. A dazzling curved glass skyscraper battles gravity in Milan. And a student center built under a noisy railroad.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

An unstable high rise, an otherworldly museum, and a towering cliffside elevator.

A Manhattan high-rise; an Athens cultural center; a Singapore university.

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.

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

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

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.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.