The Serra dos Órgãos is an Integral Protection Federal Conservation Unit , under the Chico Mendes Institute for Biodiversity Conservation ( ICMBio ) , whose main objective is to preserve representative samples of national ecosystems. Created on November 30, 1939 , the PARNASO is the third oldest park in the country , representing an important milestone in the history of Brazilian Protected Areas. ( Learn a little more about the history of the park) One of the best places in the country to practice mountain sports such as climbing , hiking , rappelling and others; besides having fantastic waterfalls. The park has the largest network of trails in Brazil. More than 200 kilometers of trails in all difficulty levels : from the ground trail , accessible to wheelchair users, to heavy Crossing Petropolis - Teresopolis, with 30 km of ups and downs for the upper reaches of the mountains and beautiful waterfalls like this.