Kiiala Manor (Kiala gård) was first mentioned in the 14th century. It was owned by Stålarm family from the 1300s to 1600s. The current wooden main building dates from 1796. The two-storey, Rococo style manor was built by general Carl Johan Adlercreutz. It was renovated to the Empire style in the 1830s and the current appearance dates from the 1880s. Carl Axel Lewin established a distillery, which is today an event and conference venue.
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.