- In the air travel hub of Dubai, there's a new way to fly: A zip line run by extreme sports company XDubai.
The view from the start of the zip line is just as breathtaking. The Burj Khalifa, the world's tallest building at 828 metres (2,716 feet), looms to your left, along with the under-construction, ship-shaped Dubai Opera. Directly ahead lies the massive Dubai Mall and the dancing Dubai Fountain, whose nightly music-and-light shows see water sprayed 140 metres (460 feet) into the air. The Address Downtown Dubai hotel is on your right.