You will surely be surprised to hear that Burj Khalifa holds not just one but many world records! Here are the things for which this building claims to be either the tallest or highest or longest in the world. Look at the best eight of them: Tallest free-standing structure in the world Tallest building in the world Highest occupied floor in the world Highest number of stories in the world Highest outdoor observation deck in the world Tallest service elevator in the world The longest travel distance in an elevator in the world Highest swimming pool in a building in the world (on level 76)