The Spungone, as it is called in the local dialect, is the stone of marine origin on which Bertinoro is built. Poor and simple stone which takes on beautiful shades of pink at sunrise and sunset. For centuries, it has been the main material used for the most important buildings of the town.
Plunging into the spungone itinerary will let you experience an extremely important value for the local community: the will of never giving up with beauty in its immediate and bare simplicity. The spungone is the only witness which can truly tell Bertinoro's unique history.