Burj Khalifa, the tallest building in the world.
The Burj Khalifa is a skyscraper in Dubai, United Arab Emirates. It is the world's tallest structure. The Burj Khalifa's elevators are notable for having the world's lengthiest lift, which is 140 stories long. The Burj Khalifa's lifts travel at a speed of 10 meters per second, putting them among the world's fastest.