Montanhas de Teresópolis Municipal Nature Park, Nature park in Teresópolis, Brazil.

Montanhas de Teresópolis Municipal Nature Park covers 4,397 hectares in northwest Teresópolis, the largest fully protected municipal conservation unit in Rio de Janeiro state. It is entered through two nuclei: Pedra da Tartaruga, in Granja Florestal, with the Tartaruga, Camelo and Arrieiro rock outcrops, easy trails and a camping area, and Santa Rita, the headquarters, with 42 hectares of accommodation, leisure areas and an interpretive trail.

The area was shaped in the late 1800s by a scientist who established a settlement there, laying groundwork for later conservation efforts. More than a century later, the land received official protection as a municipal nature park.

The Santa Rita center grew from a settlement founded in 1891 by the Swiss zoologist Émil Goeldi. It became a rural settlement project with about 100 plots after INCRA expropriated the land in 1990. The municipality bought the 42-hectare headquarters in late 2012, and today it holds an auditorium, library and interpretive trail.

Access from urban Teresópolis is through the Pedra da Tartaruga center in Granja Florestal, which has easy trails, a camping area, clean water and toilets; the Santa Rita center is the headquarters, with accommodation and an interpretive trail. The Ponte Nova center, the best-preserved forest area, is closed to the public. Motorcyclists and former granite extraction have damaged some trails.

The Ponte Nova center, the best-preserved sector with mature Atlantic Forest and little human disturbance, is closed to the public; organic farming is practiced there, while intensive agriculture along the São José do Vale do Rio Preto boundary threatens it. In the open Pedra da Tartaruga center, old granite quarrying traces are being covered by vegetation, and hunting and bird trapping have been nearly eliminated with help from residents around the park.