Free audio guide app offers a geolocated audio guide dedicated to Castel Sant’Angelo, guiding your outdoor walk along the Tiber and across Sant’Angelo Bridge. The listening experience focuses on its origin as Hadrian’s mausoleum and its later role as fortress and papal residence, using location-triggered narratives and ambient soundscapes in Discovery Mode. Earn points and digital souvenirs as you enjoy views toward the Vatican. Audio tracks unlock at key viewpoints to enrich the exterior visit.
