Fort of Saint Antony of Gurupá, Portuguese fortress in Gurupá, Brazil

The Fort of Saint Antony of Gurupá is a fortification on a rocky elevation at the confluence of the Xingu and Amazon rivers, featuring stone walls and a polygonal structure. The complex includes multiple levels adapted to the natural terrain, with access routes formed by staircases and gates.

The Dutch built a fort here between 1601 and 1619; in May 1623 Bento Maciel Parente and Luís Aranha de Vasconcelos took it and rebuilt it in rammed earth as Fort Santo Antônio. In 1690 the governor Antônio de Albuquerque Coelho de Carvalho ordered a polygonal reconstruction, begun in 1691, and the fort later served as a registry where ships presented passports. It was restored between 2014 and 2018 and reopened on 20 April 2018.

The fort houses a museum with archaeological finds from excavations that tell the story of colonial conflicts and military presence in the Amazon. These artifacts give visitors a sense of the daily life and struggles that unfolded at this remote outpost.

Visitors enter through an iron gate and climb a stone staircase to reach the fortification, which remains under the jurisdiction of the Brazilian Ministry of Defense. Sturdy footwear is recommended as the stairs are steep and the rocky ground can be uneven throughout the site.

A metal plaque on the riverside obelisk lists the expeditions that set out from here between 1623 and 1647 to expel the Dutch and English from Muturú, Nassau, Torrego, Mandiutuda, Tilletille, Cumali and Mariocari after land and river battles.