This watermill is known as Moinho de Água de Paderne (Paderne watermill) or Azenha do Castelo de Paderne (Watermill of Paderne Castle). It is located on the River Quarteira just to the north of Paderne Castle near the village of Paderne, Algarve, Portugal. This watermill was built in unknown date, but it is known that a mill has stood here since the Arab period of occupation of the Algarve. In this image is of the horizontal rotating water wheel which has been removed from the inside of the old mill and is on display outside the mill buildings.