Montjuïc Castle
Montjuïc, Spain · built 1641
Montjuïc Castle (Catalan: Castell de Montjuïc, Castillo de Montjuich) is an old military fortress, with roots dating back from 1640, built on top of Montjuïc hill in Barcelona, Catalonia, Spain. It currently serves as a Barcelona municipal facility.
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).