The Niterói Contemporary Art Museum is a museum located in the city of Niteroi, Rio de Janeiro. Designed by the architect Oscar Niemeyer, the MAC has become one of the landmark of the city. The four-storey-structure with 16 meters high and 50 feet in diameter rises from the floor in a single cylindrical base and is inscribed in a square of 2,500 m². An 817-square metre reflecting pool that surrounds the cylindrical base gives lightness to the building. The Museum of Contemporary Art was completed in 1996. The permanent collection are in the museum on a renewable loan from Joao Sattamini, a Brazilian private collector who has amassed one of the biggest private collections of contemporary art in the world.