https://en.wikipedia.org/wiki/Castro
Castro culture, Iron-Age, Bronze-Age and Celtic culture in the Northern Iberian Peninsula Castros in Spain; Castro (village), types of settlements of the Castro culture; Castro (clothing), an Israel-based clothing company "Castro" (song), a 2016 song by Yo Gotti; Wars of Castro, conflict between the Papacy and the Farnese dukes of Parma