Fortress of São João (Rio de Janeiro)
| Fortress of São João da Barra | |
|---|---|
Fortaleza de São João da Barra | |
| Rio de Janeiro, Rio de Janeiro in Brazil | |
Fortress of São João as seen from Urca hill, 2023 | |
| Site information | |
| Type | Bastion fort |
| Owner | Brazilian Armed Forces |
| Open to the public | Yes |
| Condition | Intact |
| Location | |
| Coordinates | 22°56′36″S 43°09′23″W / 22.943372°S 43.156458°W |
| Site history | |
| Built | 1565 |
| Built by | Estácio de Sá |
| In use | 1991 |
The Fortress of São João da Barra do Rio de Janeiro (Portuguese: Fortaleza de São João da Barra do Rio de Janeiro), commonly known as the Fortress of São João or São João Fort, is a 16th-century star fort in the present-day Urca neighborhood of Rio de Janeiro, erected by Estácio de Sá to protect Guanabara Bay from French invasion.