Geta Church is believed to be built in the 1460s, and was dedicated to St. George. It was used as a chapel until the beginning of the 20th century. The altarpiece was donated in 1685. The Empire-style pulpit is from 1842. The major reconstructions have been done in the 17th century, and in 1842. The belfry was built in the middle of the 17th century, but it has been reconstructed in 1685 and in the 19th century.
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.