Itatiaia National Park established in 1937, is the oldest national park in Brazil. It is located on the border between Rio de Janeiro and Minas Gerais states. The park is part of the Mantiqueira mountain range, and home to Brazil's third highest mountain, Pico das Agulhas Negras, which stands at 2,878 meters. This peak is visible to the northwest of Resende when driving between São Paulo and Rio de Janeiro on the Via Dutra highway, which is the easiest route to get there.
The park attracts bird watchers from all over the World with its 250 species of birds. Other attractions include hiking and rock climbing. The park is surrounded by the Mantiqueira Mountain Environmental Protection Area which provides an ecological buffer zone for the park.