Prato is a city and comune in Tuscany, Italy, the capital of the Province of Prato. The city is situated at the foot of Monte Retaia (768 meters), the last peak in the Calvana chain. The lowest altitude in the comune is 32 meters, near the Cascine di Tavola, and the highest is the peak of Monte Cantagrillo (818 meters). The River Bisenzio, a tributary of the Arno, flows through it. Historically, Prato's economy has been based on the textile industry. The renowned Datini archives are a significant collection of late medieval documents concerning economic and trade history, produced between 1363 and 1410. The Textile Museum also reflects this history.