Stawa Młyny - the Windmill that isn't

Stawa Młyny is a beacon in the shape of a windmill in Świnoujście, West Pomeranian Voivodeship,  in Poland. The beacon acts as a signal for vessels

entering the Port of Świnoujście, from the Baltic Sea; it is 10 meters in height, colored in white with a black roof, and was built between 1873-1874 during the modernization of the ship route into the port.

 The beacon is a popular tourist attraction on the Island of Uznam; it is featured on postcards of the town, and is a popular part of guided tours.

from https://en.wikipedia.org/wiki/%C5%9Awinouj%C5%9Bcie