On the first floor of this art gallery set up in the Pianetti palace, there is an admirable Rococo gallery overloaded with symbols and allegories. The collection includes a beautiful set of works by Lorenzo Lotto , with his masterpiece the Retab..

This imposing square building with its elegant façade decorated with a stone pavilion, was built at the end of the 15C by an architect from Sienna, Francesco di Giorgio Martini , a pupil of Brunelleschi.