A model poses backstage during the International Flamenco Fashion Show in Seville, Spain, on February 2, 2013. (Photo by Associated Press/Miguel Angel Morenatti)
1: Dubai's Burj Khalifa is the tallest building in the world, but perhaps not for long. Saudi Arabia has announced plans to build a 1 kilometer (3,280 foot) tower into the sky, to be named the Jeddah Tower, scheduled for completion in 2020. The Burj Khallifa currently stands at 2,716 ft. (Photo by Matthias Seifert/Reuters)