This atmospheric museum packs a wealth of history into the rough stone walls of a 14th-century castle. The fortification was built in 1338 as part of the Della Scala family's attempts to fend off the Venetian Republic. Exhibits scattered around the castle's rooms explore traditional industries such as fishing, olive oil production and lemon growing.
Most interesting is the limonaie (lemon glasshouse), the oldest on the lake, which dates from 1760 – it's crowded with fragrant citrus trees and windfalls litter the floor.
