Dating back to the 14th century, the Torre della Zecca, also known as the Mint Tower, is a tower that used to close off the city from the river Arno. Beyond its role in fortifying the city, it served as a mint, producing the famous Florentine gold coin, the Fiorino d’Oro, powered by the Arno River. Visits are allowed by appointment only, but you can email here to enquire further: info@musefirenze.it