Fortaleza de São João
Brazil · Americas
About
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.
Adapted from Wikipedia (CC BY-SA)。Photography via Wikimedia Commons.