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Santísima Trinidad (fort), a fortress that once existed on the Bio Bio River in Bio Bío province, Chile •
Santísima Trinidad (Asunción), a barrio (district) in Asunción, Paraguay and home of the football club Sportivo Trinidense •
La Santísima Trinidad de Paraná, a former Jesuit mission in Paraguay •
Santisima Trinidad (Taiwan), a Spanish settlement from 1626 to 1642 on the island of Formosa ==Ships==