The castle, clearly visible from the plain, boasts a thousand-year history, in fact already in 1070 it was mentioned in a document as a property of the Valperga family, which according to historical tradition were the descendants of the first king of Italy, Arduino. Over the centuries, the castle has undergone numerous changes, which have altered its original appearance as a stronghold, transforming the building into an elegant residence, which can still be visited, with richly decorated halls, antique furnishings and, outside, one splendid garden with a green labyrinth which is one of the largest in Italy. The best way to get there is along the old military road, which starts from the SP 56 starting from Caravino. Important: on the navigator's cartography a road was indicated that started at the roundabout on the plain, but I could not find it. The recommended access is therefore another road, which can be found on the left going down just before the bend. nice climb on a very good dirt road with regular slope, at the tip a splendid panorama over the plain with the greenhouse of Ivrea visible in the background. The well is visible immediately after the center of Masino, to the left of the only access road. It is protected by a grate, but clearly visible.