This museum, right next to the Cathedral, is an archaeological site in its own right and exhibits the archaeological heritage of Cologne and surrounding areas from the Palaeolithic period to the Middle Ages.
It was built on the site of a 3rd-century Roman villa, which was discovered during the construction of an air raid shelter in 1941. The highlight is the internationally-known Dionysus mosaic on the floor of the villa, around which the museum is designed, mimicking its original layout. Don’t miss the world’s largest collection of locally produced Roman glass, as well as jewellery, portraits, inscriptions, pottery, and the 100000-year-old stone tools.