The National Museum of underwater activities was set up in November 1998 by the HDS in collaboration with the Ravenna Municipality thanks to contributions from other Institutions and Associations. The National Museum of Diving Activities is divided into various sections concerning all activities to do with diving and is a must for enthusiasts. There is a green area, which has on display items like a deep-water diving bell, and a butoscopic sphere. You can find the find the museum some 11 kilometres outside of Ravenna.