One of the symbols of Orbetello, the Spanish Mill is the only windmill left of the series of nine, built by the Sienese and successively restored by the Spanish when the lagoon city became the capital of the little State of Presidi (1557). The mill has a circular plan and, along with the others, was used to grind the flour destined to the city’s inhabitants. Suggestively rising from the lagoon, the building is sited at the beginning of an artificial dam built by Grand Duke Leopold II in 1842 to connect Orbetello to Argentario.