One of the most renowned architects of th 20th Century, Brazilian Oscar Niemeyer, died yesterday at age 104. He was best known for curving forms in the buildings he designed and looking at some of them today, I just think, Wow.
He designed many of Brazil's goverment buildings. He was a communist who was refused entry into the United States on several occasions. Here's a page with many of his works, most of which illustrate his interest in curving architecture.
His famous staircase.