megastructures

National Geographic explores the building techniques at Machu Picchu. Temples, altars and residences of this steep mountain city have resisted torrential rains, landslides and earth tremors since being abandoned by the Incas. (46 min)

One of the most audacious engineering projects the world has ever seen is Palm Jumeirah, Dubai, an artificial island in the shape of a massive palm tree. (48 min, 5 segments)

The construction of the world’s tallest hotel, the icon of Dubai, Burj Al Arab. (48 min, 5 segments)