The Cláudio Santoro National Theater is a multi-theater building in Brasília, Brazil. It was designed by Oscar Niemeyer in the Modern architectural style. Construction began on July 30, 1960, and the building was completed in 1966. Built in the shape of a truncated pyramid, it is the largest building in Brasilia designed by Niemeyer specifically for the arts. The building was closed for renovation in 1976, and was reopened on April 21, 1981.