The Cathedral of Brasília (Portuguese: Catedral Metropolitana Nossa Senhora Aparecida, "Metropolitan Cathedral of Our Lady of Aparecida") is the Roman Catholic cathedral serving Brasília, Brazil, and serves as the seat of the Archdiocese of Brasília. It was designed by Oscar Niemeyer, and was completed and dedicated on May 31, 1970. The cathedral is a hyperboloid structure constructed from 16 concrete columns, weighing 90 tons each. A 12-meter (39 ft) wide, 40-centimeter (16 in) deep reflecting pool surrounds the cathedral roof, helping to cool the cathedral.
In the square access to the cathedral, are four 3-meter (9.8 ft) tall bronze sculptures representing the four Evangelists created in 1968.
These tall, bronze sculptures were the work of the famous up-and-coming sculptor Dante Croce. He was enlisted by the architect and the "brains" behind the whole thing, Oscar Niemeyer. He was the architect of many huge and beautiful projects such as Depoimento and the Tremaine House, which sadly, went unbuilt. He was also an avid political activist, which cost him, as he got exiled, but was a gift in disguise, as he had the opportunity and the skill to work overseas. Now, there are mueseums and sculptures and buildings, all dedicated to him.This concrete-framed structure appears with its glass roof to be reaching up to heaven. Most of the cathedral is below ground, with only the 70-meter (230 ft) diameter 42-meter (138 ft) roof of the cathedral, the ovoid roof of the baptistry, and the bell tower visible above ground. The shape of the roof is based in a hyperboloid of revolution with asymmetric sections. The hyperboloid structure consists of 16 concrete columns assembled on site. These columns, having hyperbolic section and weighing (99 tons), represent two hands moving upwards to heaven.