Beaumaris Gaol

Beaumaris Gaol (Carchar Biwmares) is a disused gaol, or prison, located in Beaumaris, Anglesey, Wales. Although no longer in use it remains largely unaltered and is now a museum open to visitors, with around 30,000 visiting each year.

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