The museum is divided into three buildings, two of which are dedicated to the exhibition. The collections are mostly composed of finds from the excavations of the ancient Greek colony.

The large number of handmade pottery is evidence of the different phases of life in the town, its commercial relations and its material culture. The figured and architectural terracottas, the antefixes with Silenian masks attest the thriving of a sacred monumental architecture at the beginning of the 6th century, as well as the presence of lively workshops which produced terracotta objects. Various artefacts are evidence of settlements along the coast date back to the Byzantine period.
Other items are the beautiful bronze helmet made in Moio, Alcantara Valley, during the Hellenistic period. Part of the exhibition is dedicated to underwater findings, such as several anchor stocks and some transport amphoras.