Burj Khalifa is so tall that, from it, y …

Burj Khalifa is so tall that, from it, you can actually watch the same sun set or rise twice in a day. If you watch the sun set from the base of the building and then take a super fast elevator to the top of the building, that same sun has not set yet. There is a time gap of 2-3 minutes. The same is applicable vice versa with sunrise.