5. Walt Disney Concert Hall (Los Angeles, California, USA)
This glorious metal building was designed by the one and only Frank O. Gehry, the same person who designed the EMP Museum in Seattle. Clearly this guy loves huge, reflective metal structures. He did a wonderful job with this building, except that in the original design some of the walls were matte and some reflective. When it was first built, they ran into a little problem. The light, reflected by the shiny walls cased the nearby apartment complexes to suffer from glare and overheating, so they had to make some changes and make the whole building matte. Either way, this concert hall is used for all sorts of performances and the acoustics here are said to be amazing.