Rome is redefining the relationship between urban mobility and cultural heritage, turning some of its metro stations into true underground exhibition spaces. Today, Line C stands as the most advanced testing ground for this vision: from the new stations at Colosseo–Fori Imperiali and Porta Metronia, to the station-museum at San Giovanni, which paved the way for a new way of moving through the city. These are places of transit that become places of knowledge, where waiting time is transformed into an immersive cultural experience. In a city built in layers, where every excavation is an encounter with history, the metro is no longer just a functional piece of infrastructure, but an ongoing narrative that accompanies residents and travellers into the very heart of the Capital.