Capital Gate, Abu Dhabi
Move over, Leaning Tower of Pisa. Abu Dhabi's Capital Gate has earned the distinction of being the most "leaning" building in the world -- in fact, it was designed to have an 18-degree tilt. Dreamed up by architectural firm RMJM, the 520-foot-tall building houses offices and a luxury Hyatt hotel.
The World's Most Amazing BuildingsTake a tour of the most incredible structures from Chicago to Dubai