Bierutów Castle, (formerly Bernstadt) is believed to have been built in the 13th century under the orders of Henry III the White, Duke of Wrocław. It underwent renovation in the Renaissance style between 1534 and 1540, but was rebuilt after a fire in 1603 during the rule of Henry Wenceslaus, Duke of Oels-Bernstadt. Later that century, Christian Urlich Wirtemberg renovated the castle, adding another floor and a Baroque portal in the south wing. It underwent extensive redevelopment in the 19th century, replacing the ruined porches, and in 1899 the north wing was completely renovated.
Since World War II it has served as the headquarters of the Forest Inspectorate of Bierutów, accommodation for forestry workers and the headquarters of the Municipal Enterprise for Communal Management (MPGK), and at one stage was a kindergarten.
References:Towering 52 meters above the sea, Bengtskär lighthouse is the tallest one in Scandinavia. The building started in in 1905 after the shipwreck of S/S Helsingfors and was completed in 1906. The lighthouse was designed by architect Florentin Granholm. On December a special petrol lantern, designed and built in Paris, was brought to Bengtskär and installed atop the tower.
German fleet bombarded Bengstkär in the First World War in 1914. Since the Gulf of Finland was heavily mined, it was not until 1919 that the surrounding seas were declared safe for shipping, that the light was lit again.
After the war the military value of Bengtskär increased as part of the defence system of independent Finland. In Second World War (1941) Soviet Union made a suprise attack to island. After a bloody battle, the small Finnish garrison emerged victorious. Intermittent repairs to the facility continued during the post-war period.