Burj Kalifa (formerly known as Burj Dubai): Tallest Building in the World

The Burj Kalifa is the tallest building and man-made structure on Earth. At 828 meters (almost a kilometer!) high, the Burj (meaning tower in Arabic) was originally named "Burj Dubai," but at the last minute the Sheikh of Dubai re-named it in honor of the Sheikh of Abu Dhabi as a thank you for sending millions of dollars to Dubai during the financial meltdown. All souvenirs had to be re-made, postcards re-printed and signs re-hung. Apparently this happens all the time with naming things. Sadly, two days before I got to Dubai they closed the observation tower due to a faulty elevator...