Holy Spirit Church in Bale is remarkable for its colourful frescoes on the ceiling and walls. It was built in the 15th century. Its interior, constructed with regular stone blocks with stone pavement-slates, is decorated with fresco paintings by Albert from Constance. Together with usual scenes of the Christological cycle on the sanctuary side walls, Albert also painted the scene of the Throne of Mercy with the saints on the wall abovethe altar. The frescoes at the entrance of the church depict angels and hell.
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.