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 skinniest skyscraper in the world at 111 W. 57th Street, New York, will soon become the Big Apple's third tallest. Using an innovative, gravity-defying design, this colossal megastructure is breaking all the rules of engineering. Can engineers find a way to build this ultra-tall slender building?

A look at the Beijing Daxing, set to become the biggest airport in the world, designed to accommodate a staggering 100 million travellers each year.

A state-of-the-art NATO airplane is one of the most complex surveillance tools in the world. Special access inside the behemoth reveals how cutting-edge engineering and a hi-tech midair refueling system helps its crew defend against security threats.

The world's highest bridge, the Duge Bridge or Beipanjiang Bridge, impossibly spans an 1,800-foot chasm known as the Crack in the Earth, and to build this engineering marvel, experts use cutting-edge construction technology that can conquer the deadly cliffs of this rugged environment.

Deadly avalanches and catastrophic flooding are ever-present threats at one of the world's busiest ski resorts, but new technology and cutting-edge construction methods help engineers conquer the elements to keep this mountain-top getaway safe.

***This episode is a duplicate of S09E03, which is the correct episode number on IMDB and TVDB***

A look at the incredible machines built to get troops directly to the front line, on land, at sea and in the air.

***This episode is a duplicate of S08E03, which is the correct episode number on IMDB and TVDB***

The Independent, a residential skyscraper in Austin, Texas. At 690ft, it is the tallest building in the city, surpassing the 683ft Austonian, another residential skyscraper.

***This episode is a duplicate of S08E01, which is the correct episode number on IMDB and TVDB***

A look at the world's biggest oil tanker - the mighty Supertanker Europe of the record-breaking TI Class of ship.

***This episode is a duplicate of S07E07, which is the correct episode number on IMDB and TVDB***

A look at the Beijing Daxing, set to become the biggest airport in the world, designed to accommodate a staggering 100 million travellers each year.

***This episode is a duplicate of S07E04, which is the correct episode number on IMDB and TVDB***

The skinniest skyscraper on earth is being built in New York City. Can engineers find a way to build this ultra-tall slender building?

***This episode is a duplicate of S09E02, which is the correct episode number on IMDB and TVDB***

Chinese authorities attempt a huge infrastructure project as they try to move vast amounts of water from the wet south of the country to the dry north.

***This episode is a duplicate of S09E04, which is the correct episode number on IMDB and TVDB***

The Falkirk wheel is the first and only rotating boat lift, capable of moving 600 tonnes of boat and water over a 25-metre height difference in just minutes.

***This episode is a duplicate of S09E01, which is the correct episode number on IMDB and TVDB***

Stratolaunch is designed to lift rockets, spacecraft and experimental high-speed hypersonic planes into the stratosphere, then release them for their onward journey into space.