Megastructures

It's one of the biggest construction projects in British engineering history. A new high-speed rail line costing several billion pounds and cutting through some of the most heavily developed land on the planet to complete a high speed link between two of Europe's major capitals: the Channel Tunnel between London and Paris. High Speed One's design and construction overcame unprecedented obstacles to achieve what many thought was impossible. Step aboard to explore the engineering behind this UK super train line.

An ambitious young king who seizes the throne of the Khmer Empire by murder, commissions the largest stone temple in the world built entirely on a swamp - the mighty temple of Angkor Wat.

Uncover how Abu Dhabi's extraordinary Aldar HQ skyscraper, in the form of a circle sitting on its edge, came to be built.

The secrets behind Singapore's Marina Bay Sands development, which includes hotels, a museum, casino, waterfront promenade and theatres.

A huge project is underway in the Arabian Gulf, so vast it can be seen from space. Palm Jumeirah is an artificial island in the shape of a palm tree.

Royal Caribbean's Oasis of the Seas, one of the world's largest cruise ships, which features 16 decks and can accommodate 5400 passengers.

The Pearl River Tower is one of the first of a new generation of super smart buildings. It will use less than half the energy of a conventional skyscraper and will harvest the forces of nature to make energy of its own. With a curved facade that faces directly into the wind, the Pearl River Tower in China's Guangzhou City is shaped for performance. With a design specific to its environment, the Pearl River Tower utilizes a multitude of energy efficient technologies in one single structure, and symbolizes the future for super-tall building design.