I visited the "Museu Nacional da Republica Honestino Guimaraes" of Brasilia on 2019 (October 1st).
Designed by Oscar Niemeyer and built in 2006 as part of the Cultural Complex of the Republic. Famous for the white dome and the sculptural exterior ramp.
The art museum was open to the public in December 15th 2006 (45 years after it was design), the same day that Niemeyer turned 99 years old. The first exhibition was about Niemeyer, called: "Niemeyer & Niemeyer e Brasília – Patrimônio da Humanidade".
The building has 14,500 square meters (156,000 sq ft) of exhibit area, and the structure is only concrete.
Architect and traveler.