Seixal Ecomuseum, Branch Tide Mill

Ten tide mills formerly ground grain in the area around Seixal at the mouth of the River Tagus, 14 km south of Lisbon. They all form part of the Municipal Ecomuseum, but that at Corroios which dates from the fifteenth century has been open as a museum since 1986. The displays illustrate the principles of operation of a tide mill, the operations of which can be observed, and the means by which wheat, maize and rye were ground into flour.