Designed by Oscar Niemeyer and Lucio Costa, the Praça dos Três Poderes is one of Brasília’s main attractions and headquarters of the three powers of State: the Palácio do Planalto (Presidential Palace), the Supremo Tribunal Federal - STF (Supreme Court) and the Congresso Nacional (National Congress).
The Três Poderes cultural center, subject to the local Cultural Secretary, manages the activities of the three cultural spaces of the plaza. They are: the Museu Histórico da Cidade (the city’s historical museum that contains historical records on the city’s construction), the Espaço Lucio Costa (with an enormous scale model of Brasília) andthe Panteão da Pátria (with art works honoring national heroes).
At the Praça dos Três Poderes, you can also find monuments designed by renowned international artists such as Os Candangos, by Bruno Giorgi; A Justiça, by Alfredo Ceschiatti, located in front of the Supreme Court; O Pombal e a Pira da Pátria, by Niemeyer; and the Mastro da Bandeira, with the largest national flag in the world.
https://www.visitbrasil.com/attractions/praca-dos-tres-poderes.html