Megabuilders: "Fantasy Islands"

Off the coast of Dubai in the Gulf of Arabia, two mega-builders are pulling off one of the most ambitious feats of marine engineering the world has ever seen. In this episode, witness the creation of the world's largest man-made islands - three artificial islands built in the shape of a palm tree - which will be the home to a luxurious future city of 100,000 people. When building an island, where do you even begin? DISCOVERY.COM