The castle houses the Municipal and Archaeological Museum, which you enter via an inner courtyard with a charming pergola and small loggia. The architectural origin of the castle is unknown.
The structure of the premises as it stands today has undergone numerous modifications marked by successive phases of damage and reconstruction.
Besides archaeological finds from the Locarno region, the museum is particularly famous worldwide for its important collection of Roman glass.
When touring the rooms, you cannot help but admire the wooden panelled ceilings carved with gothic decorative features, as well as the many coats of arms that adorn the walls.