Multiple choice general knowledge Which is/are true about Burj Khalifa Tallest building in the world Tallest free-standing structure in the world Elevator with the longest travel distance in the world All the above Reveal answer Fill a bubble to check yourself D Correct answer Explanation All statements are true about Burj Khalifa: it is the tallest building in the world at 828 meters, the tallest free-standing structure, and has elevators with the longest travel distance. These are some of its many world records.