Photo: Marshallhenrie, CC BY-SA 4.0 Free landmarks in Rio de Janeiro
Photo: Marshallhenrie, CC BY-SA 4.0 
Photo: Photograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0 Lapa Arches
Free, always
Photo: Cyro A. Silva from Rio de Janeiro, Brasil, CC BY 2.0 Metropolitan Cathedral of Rio
Free, always
Photo: Arne Müseler, CC BY-SA 3.0 de Museum of Tomorrow
Free at certain times
Photo: Carlos Luis M C da Cruz, CC BY-SA 4.0 Praça XV
Free, always
Photo: Dennis G. Jarvis, CC BY-SA 2.0 Theatro Municipal exterior
Free outside, paid inside
Photo: Felipe Restrepo Acosta, CC BY-SA 4.0 Pedra do Sal
Free, always
Photo: Halley Pacheco de Oliveira, CC BY-SA 3.0