Within a three-week period, Adrian Smith sketched out the original designs that would eventually become the tallest building in the world, the Burj Khalifa. In the early 2000s, he was approached ...

Burj Khalifa is the tallest building in the world, while India's tallest is a 320-meter-high building located in..

Burj Khalifa is the tallest building in the world, while India's tallest is a 320-meter-high building located in..

The structure was designed to be the world's tallest but construction has stalled and there is no sign of completion.

But that's not the only title this tower's got under its belt. Burj Khalifa is also the tallest free-standing structure in the world and home to the highest outdoor observation deck in the world.