Free audio guide app delivers geolocated audio guides for Porta Santi Gervasio e Protasio, focusing on its soaring eight-metre arch and the lunette with the Madonna and Child, plus the twin gray sandstone towers. In Discovery Mode, concise, location-triggered narrations mix architectural detail and small anecdotes, including the Meschi artists' link, with ambient soundscapes as you move around the gate, and gamified points and digital souvenirs register your visit.
