Its 12 rooms open to the public are beautifully furnished with furniture, paintings, porcelain, collections of alabaster and other artistic objects of great value, representing Italian, European and Eastern art from 1400 to 1900. Everything has remained as they have seen it, over the centuries, the kings, the princes who were hosted there and the directors such as Luchino Visconti who set their films there (in 1964 Luchino Visconti shot part of the film “Vaghe stelle dell’Orsa” with J. Sorel and C Cardinale, film awarded with the Golden Lion at the Venice Film Festival).

Its construction was begun at the end of 1500 by Attilio Incontri, a nobleman from Volterra; the facade, attributed to Ammannati, is a rare and valuable example of the transition style between the Renaissance and the Baroque.