The earlier church of Cléry-Saint-André Abbey from the 13th century was destroyed in Hundred Years' War in 1428. Only the tower survived until in 1449 Charles VII and Count Jean de Dunois ordered to build a new church. It was completed in 1485. The nave is 80m long and 27m high. The altar dates from the 19th century. The most notable inventory in the Cléry church is tomb of Louis XI of France. He was buried to the church in 1483.
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.