Fortaleza de São João

Urca, Brazil

The Fortress of São João da Barra do Rio de Janeiro (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.

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Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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