Rocca Borromeo di Angera

The Rocca Borromeo di Angera, or Rocca d'Angera, also called Borromeo Castle, is a rocca on a hilltop above the town of Angera in the Province of Varese on the southern shores of Lago Maggiore. It has medieval origins and initially belonged to the Milanese archbishop. It passed then to the Visconti of Milan and later to the Borromeos, who are still the owners.

It is visible across the lake from Arona, where the remains of another castle with the same property history, the Rocca di Arona, stand.

Source: Wikipedia