The document lists information about the 10 tallest buildings in the world, including their height in meters and feet, number of floors, city location, and year built. The tallest building is the Burj Khalifa in Dubai at 828 meters (2,717 feet) tall, built in 2010, and the shortest on the list is Citic Plaza in Guangzhou at 391 meters (1,283 feet) tall, built in 1997.