The Palazzo dei Priori is located in the historic centre of Volterra, in the homonymous square, in the province of Pisa. It is the oldest municipal building in Tuscany. The building was also the original seat of the city's art gallery, as many paintings were housed in its rooms during the 19th century until all the works were moved to the current location in Palazzo Minucci-Solaini. © Musei Val di Cecina / unknown