What might first appear to be a tribute to J.R.R. Tolkien's "The Hobbit," the Waldspirale or Forest Spiral in Darmstadt, Germany, is actually meant for regular-size people to live in. Designed by Friedensreich Hundertwasser, the complex includes 105 apartments that surround a landscaped courtyard that has a running stream. The last work of Hundertwasser is a world unto itself. The complex, completed in 2000, months after the architect's death, also has a restaurant and cocktail bar in the turret atop the tower. (Frank Rumpenhorst/AP Photo)