Fort Kastella
Ternate, Indonesia
Fort Kastela (Indonesian: Benteng Kastela) is a ruined Portuguese fortress located at the southwest coast of Ternate. It is famous for being the first colonial fortification constructed in the Spice Islands (Maluku) of Indonesia. Built by the Portuguese in 1522, it is also referred to in different languages as São João Baptista de Ternate or Fortaleza de Ternate (Portuguese), Ciudad del Rosario (Spanish) or Gammalamma (Ternatean and Dutch). Today it is locally known as Kastella, named after the Spanish region of Castile.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).