Impossible Engineering

How the world's largest cruise ship was built. Also: the greatest submarine ever built.

How the fastest things in the universe were engineered.

How some of the toughest things on Earth are engineered.

The Rion Antirion Bridge is an engineering colossus, spanning almost two miles. Discover how engineers conquered deep water and hurricane force winds to build a structure that could stand strong in one of the most active earthquake zones on our planet.

The HMS Queen Elizabeth aircraft carrier has a surface area larger than two soccer fields, and is stocked with cutting edge F35 fighter jets. Discover how this megaship ticks inside and out.

Soaring over 2,000 feet into the sky, the Shanghai Tower is the second tallest building in the world, and a futuristic engineering marvel. Discovery how cutting-edge technology means that the building's occupants will never feel it sway.

For NASA to send a person to Mars, they will need to build the most powerful rocket ever built. Discover inside story behind the Orion Space Craft, an engineering feat designed to sustain astronauts for years in one of the universe's harshest environments.

How did engineers build the tallest bridge on the planet? As tall as a skyscraper, the Millau Viaduct braves deadly wind speeds over an immense abyss, and we go inside the story behind this modern wonder.

The AT and T Stadium in Texas is home to the Dallas Cowboys and the world's largest retractable roof. This $1.2 billion stadium can house over 100,000 fans, and we'll go inside how this engineering feat was built.

Discover what it took to build the largest and most sophisticated radio telescope on the planet. This engineering colossus will help astronomers explore galaxies billions of light years away, and might help discover extraterrestrial life.

Go inside the ambitious engineering project that remade the famous Panama Canal. Billions of dollars were spent to move millions of cubic tons of earth, and ultimately, the canal will be able to accommodate the biggest ships in the world.

Find out what it took to build the largest ship in the world, the Pioneering Spirit. This 900,000-ton behemoth can install oil pipelines in the world's deepest waters and features state-of-the art thrusters and mammoth lifting beams.

The world's toughest trains have conquered deadly jungles, deserts, and mountains, and were made possible by expert engineering and cutting-edge technology.

The world's fastest trains were built with expert engineering and cutting-edge technology, pushing the speed of railroad travel to new limits.

The world's busiest cities are kept running by innovative train systems built with expert engineering and cutting-edge technology.

The Chernobyl disaster created one of the world's deadliest places, and as a temporary fix around the damaged reactor begins to fail, engineers race to build a cutting-edge structure to contain the contamination that could threaten the world.

New York City's biggest construction project ever features several brand-new buildings in Manhattan's Hudson Yards, where an army of ambitious engineers and builders are tasked with developing seven city blocks over 24-hour subway trains.

The US Army's Abrams tank is a 70-ton war machine capable of reaching speeds of 45 miles per hour on the most extreme terrains on earth, but before it enters the battlefield, it must face a set of brutal challenges to put its engineering to the test.

When engineers built railroads across the swamps of New Orleans, they used cutting-edge technology and methods to get it done, and these extreme trains attest to the innovative engineering required to conquer the most challenging water environments.

The first railroads in the United States were engineering marvels built to conquer America's deadliest places. Using cutting-edge science, engineers and builders changed the nation by connecting the California frontier with the rest of the country.

When engineers built a cutting-edge railroad to navigate the South American Andes, they use cutting-edge tech and engineering to conquer its deadly heights, and this trailblazing train sets new records on one of the most dangerous routes in the world.

The man-made islands of Dubai are modern-day engineering marvels that turn the Arabian Sea into high-priced real estate. Today, a team of expert engineers use cutting-edge technology to build a brand-new city district where there was once only water.

A team of engineers are overhauling London's underground infrastructure to build a world-class sewer system. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece.

The F-35 is the most advanced fighter jet on the planet. Special access into the most expensive military program ever reveals how engineers use cutting-edge tech to outfit this 1,200 mile-per-hour aircraft with a state-of-the-art stealth system.

The world's biggest oil tanker is longer than four football fields and can haul 15,000 trucks worth of oil. Thanks to cutting-edge maritime engineering, this record-breaking vessel makes its deliveries across rough seas quicker and safer than ever.

Engineers in Seattle are building the world's first floating railway bridge, and to tackle this complex engineering challenge, they use new, innovative construction technology that enables high-speed trains to go where they've never gone before.

The Independent, a brand-new skyscraper in Texas is a gravity-defying engineering marvel with a one-of-a-kind shape, and to build it, experts use cutting-edge construction and design that pushes modern-day tower-building to strange and innovative heights.

Test pilots and engineers embark on the first flight of the largest airplane ever built: the Stratolaunch, a one-of-a-kind aircraft designed to transport rockets, spacecraft and experimental hypersonic planes into the stratosphere.

Engineers in China are constructing the largest and most ambitious water transfer project in human history, defying nature to move vast quantities of water from the south to the dry north in Beijing, all without the use of pumping stations.

Explore three battlefield behemoths that command land, sea and air.

The world's largest crane vessel pushes the limits of modern engineering.

A brand-new Mars rover might discover extraterrestrial life.

The deepest-diving submarine is a monumental feat of engineering.