The Roman-Germanic Museum (Römisch-Germanisches Museum) in Cologne, Germany, is a prominent archaeological museum. It was founded on 1974 and showcases a rich collection of artifacts from the Roman settlement upon which modern Cologne is built. The museum's exhibits range from the prehistoric period to the early Middle Ages, with a focus on Roman times. Among its most noteworthy artifacts is the celebrated Dionysus mosaic, which once graced the floor of a Roman villa, and an impressive collection of Roman glassware. The museum also displays items from the medieval period, such as the world's largest collection of Roman glass and numerous Roman and Germanic antiquities. Situated next to the Cologne Cathedral, it is built on the site of a Roman town villa, with the museum's centerpiece being the original site of the large Dionysus mosaic. Through its extensive collection, the museum offers insights into the daily life, religion, and urban history of Colonia Claudia Ara Agrippinensium, which was the Roman colony that evolved into the city of Cologne.