If you seek a really impressive interior, visit this breathtaking Baroque church and one of the architectural gems of Rio. The walls, the altar and all other parts of the church are very heavily decorated with gold and other metals. Be sure to also notice the various artworks. You can try to guess how many tons of gold were used here.
Wikipedia https://pt.wikipedia.org/wiki/Igreja_da_Ordem_Terceira_de_São_Francisco_da_Penitência
Phone +55-21-22620197
Address Rua da Carioca - Centro, Rio de Janeiro, 20050-020, Brazil
Coordinates -22°54'24.925" N -43°10'45.437" E