The Balancing Barn in England might make some nervous. The Dancing House in the Czech Republic was inspired by Fred Astaire and Ginger Rogers. The Cube Houses in the Netherlands were meant to resemble a village within a city. A statue of Tupac Shakur is housed by the fashion-forward MARTa Herford in Germany. France's Odiello Solar Furnace is the world's largest. The Heydar Aliyev Center in Azerbaijan is as smooth as it gets.