Burj Khalifa, Dubai, UAE
The world's tallest building, Burj Khalifa towers an astonishing 2,717 feet in the Dubai sky. The building holds a number of records: It contains the world's highest occupied floor, the tallest service elevator and the highest outdoor observation deck, which resides on the 124th floor.
The design was inspired by the Hymenocallis flower and developed by the Chicago-based firm Skidmore, Owings & Merrill LLP. The building includes luxury residences, a hotel, a library, a supermarket, children's daycare and a cigar club.