The fortress was designed to protect the entrance to the bay of Florianópolis, then known as Vila de Nossa Senhora do Desterro.
During the Federalist Revolution of 1893, the fort served as a prison and site for the execution of political prisoners.
The island contains a restored fountain known as the 'Fonte da Carioca', designed to provide fresh water to the garrison.
The strategic location was chosen to cross-fire with the Fortaleza de São José da Ponta Grossa.
Anhatomirim translates to 'small devil' in the Tupi language, referencing the island's jagged appearance.
The site was once the headquarters of the Captaincy of Santa Catarina.
Fortaleza de Santa Cruz de Anhatomirim is an 18th-century defensive complex located on Anhatomirim Island in the Bay of Governador Celso Ramos, Santa Catarina. Originally constructed by the Portuguese Crown starting in 1739, it served as the primary defensive anchor for the island's coastal defense system. The site features restored colonial military architecture, including a powder magazine, a garrison house, and an armory. The fortress was declared a National Historical and Artistic Heritage Site in 1938. It currently functions under the management of the Federal University of Santa Catarina. The site provides panoramic views of the surrounding bay and the neighboring islands. The infrastructure includes preserved stone ramparts and batteries that once housed heavy naval artillery.
The upper stone rampart overlooking the channel between Anhatomirim Island and the mainland.
Wear comfortable, non-slip footwear as the historic stone pathways can be uneven.
Bring a hat and high-SPF sunscreen, as there is limited shade across the open fortification grounds.
Check local weather reports before departure, as boat crossings to the island are dependent on sea conditions.
Assuming boat service is available year-round without checking seasonal schedules for marine weather disruptions.
Schedules vary significantly by season; ferry operations are frequently suspended during rough sea conditions or the winter off-season.
Respect historical signage and do not climb on the protected stone walls or cannons.
