Palácio da Alvorada
Open to the public on Wednesday afternoon, the president's official residence was Niemeyer's first project in the new capital and is located at the edge of Lago Paranoá. Niemeyer used delicate slanting support columns, here clad in white marble. The name of the building translates as Palace of the Dawn, and its design is suitably inspired. Get here by 2 pm to avoid a long wait for a guided tour (Portuguese only).