Explore the cobblestoned shell grottoes on the lower floor of the palazzo, embellished with black and white rocks and tuff stone chips. Vitaliano Borromeo conceived this as a place of coolness and pleasures, and even today you can see many of the pieces of his collection.
The palazzo safeguards his precious heart, the General Berthier’s gallery. The place counts 130 paintings and, along with the Sala del Trono and the Sala delle Regine, lures you into the core of the Borromeo’s precious collection.
History enthusiasts will find something of interest to them. During April 1935, the Hall of Music hosted the Stresa Conference. There is also the Hall of Napoleon, in which he was accommodated along with his wife Giuseppina in 1797.