Sourced mainly from private collectors, the works are mostly by Renaissance artists, but they cover a significant and diverse range of subjects and landscapes, and all perfectly complement the regal grandeur of the palazzo itself.
There's a portrait of Cosimo de' Medici in his prime, a strikingly detailed outline of a woman's hand embroided on silk, and a sketch of Giuseppe Nicolo Nasini.
But as beautiful as these works are, there's one painting that draws more visitors alone than all the other pieces put together - a self-portrait of Venetian artist Rosalba Carriera (1675-1757) seen above. Delicately painted with pastels, it is of considerable value and above all absolute splendour.
Address: Piazza Colonna,1
Opening hours: visit Castel del Piano's tourist information centre to find out
Price: € 2,00
For more information: visit the Museums of Maremma website