Sugarloaf Mountain and Urca Hill Natural Monument, Natural monument in Rio de Janeiro, Brazil.

Sugarloaf Mountain and Urca Hill Natural Monument is a 91.5-hectare protected area in the Urca neighborhood of Rio de Janeiro. It protects the Sugarloaf and the adjoining Morro da Urca, two outcrops of augen gneiss, with kinzigite gneiss in the depression between them. The Bondinho cable car, inaugurated in 1912, links the peaks.

Portuguese colonists named the peaks in the 1500s, comparing their shape to clay molds used in the sugar trade that dominated the region. The cable car system opened in 1912 and transformed access to the summit.

The mountain's name comes from the Portuguese for 'sugarloaf', after the clay moulds used to pack sugar for export. The Bondinho cable car, inaugurated in 1912, runs in two stages, first to Morro da Urca and then to the summit. The Cláudio Coutinho Track has information boards about the local geology and ecology.

The cable car system operates throughout the day and allows visitors to reach both peaks without strenuous hiking. Arriving early in the morning helps avoid crowds, especially on weekends when the site is busier.

The protected area contains one of the world's largest concentrations of rock climbing routes, with hundreds of established paths for climbers of all levels. These routes exist within the urban landscape and draw climbers from around the world.