Oscar Niemeyer was a Brazilian modernist architect known for his design of Brasília, and his work on the United Nations building in NYC. His design for Brasília is always an inspiration for me. The way he worked with the lines and space really make it a beautiful and functional construction.
These wonderful photos taken by Marcel Gautherot bring out the beauty in the architecture. You can see more of them, and read more about Brasília, in this article.