Wéris village well known for its megaliths, including dolmens and menhirs. There is a 'Museum of Megaliths' in the centre of the village. Listed as an exceptional heritage site of Wallonia, The North Dolmen of Wéris is part of a megalithic field stretching about 8 km long and 300 m wide. In the current state of research, this megalithic field consists of two covered walkway dolmens with associated menhirs, and six sites signaled by lone menhirs.
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.