Considered one of the most important and oldest archaeological sites in the country, this mill marks the importance of the sugar-cane boom in the 16th century. It was the first sugar-cane mill in Brazil, according to Frei Gaspar de Madre de Deus and the National Institute for Historical and Archaeological Research (Iphan). Powered by water, it is a typical building of the era: built of stone, whale oil and lime, with several buildings built in a row. It probably had a grinding mill, vat, storeroom, stables and slave quarters. It operated until the 18th century. The ruins were donated to the University of São Paulo in 1958 and, during their excavations, researchers found sugarloaf tins from before 1615.