The Castello Visconteo, now an archaeological museum, is located on the edge of the old town and was built in the 12th century, probably as the residence of a Captain Orelli, who remained true to the Emperor.
In 1260, it fell into the hands of the Ghibellines. In 1342 the Visconti of Milan, for whom it is now named, attacked the castle from both the land and the lake side and took it. It first came into the hands of the Eidgenossen in 1503.
Today, only a fifth of the original structure remains and dates from the 15th and 16th centuries. Only the foundation remains from the original structure.
Opening hours (from 27th of April until end of October 2018):
Tuesday - Sunday: 10.00h - 12.00h / 14.00h - 17.00h