Located on the Polish coast of the Baltic Sea, next to the road between Ustronie Morskie and Mielno, Gąski Lighthouse was built between 1876 and 1878 from red bricks. The height of the lighthouse is 41.2m; with the lighthouse's light having a focal length of 50.1m. Originally it was fitted with a Fresnel lens with the light source provided by kerosene lamps. The intermittent beam was achieved by three screens rotated by a clock-work mechanism.
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