Havnbjerg Church is a 12th century Romanesque stone church. Tower and spire date from 1857. The bells date from 1370 and 1920. The altarpiece is a painting by C.W.Eckersberg. In the wall of the choir is a so-called piscina - a basin designed for liturgical handwashing. The pulpit is late Renaissance and the baptismal font has a Romanesque top. The organ has 20 stops. The churchyard has soldiers' graves from 1848 and 1864 as well as a monument to those killed in World War I.
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.