Nestled beneath the Basilica of Saints John and Paul, the Case Romane del Celio offers a captivating glimpse into Rome’s subterranean past. This archaeological site comprises a series of ancient Roman dwellings, richly adorned with frescoes and mosaics that span four centuries of history. Once private homes, the domus later became places of Christian worship, reflecting the city’s religious transformation. Visitors can explore preserved rooms, corridors, and chapels, including the Confessio, believed to honour early martyrs. Located on Clivo di Scauro, the site provides a serene and evocative experience, revealing layers of Roman life hidden beneath modern streets.