Old Gildeskål stone church was built around the year 1130. In 1851, a new law was passed that said that all rural churches had to be able to fit at least 30% of the parish members in the church building. Since this church could only seat about 130 people, it was too small, therefore a new church had to be built for the parish. It was decided that the new church would be built on the same site, just west of the old church. The new Gildeskål Church was completed in 1881 and it seated about 750 people. The interior dates mainly from the 18th 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.