The Burj Khalifa in Dubai, United Arab Emirates is the tallest building in the world at 828 meters (2716.5 feet) tall. It was designed by American architect Adrian Smith to resemble a desert flower, with wings extending from a central core. The Burj Khalifa contains over 160 stories including restaurants, hotels, offices, and residences. Visitors can take high-speed elevators to an outdoor observation deck on the 124th floor that offers 360-degree views of Dubai.