Castle of Alcantarilha
Portugal · Europe
About
The Castle of Alcantarilha located in the civil parish of Alcantarilha within the Silves municipality of Portugal's Algarve region, is a medieval fortress. Now in ruins, this little-known monument was historically used to protect the local village and surrounding areas from attacks by North African pirates.
Adapted from Wikipedia (CC BY-SA)。Photography via Wikimedia Commons.