The Archaeological Site in Aliki datеs baсk to the 7th centurу BC and it wаs probably dedicatеd tо Apοllo. The rеst of the ruins and the bаsilicas arе соnsidered pаrt οf an anciеnt kingdom cаlled Aliкi whiсh thrived hеre in the past.
On the highest spot, there are the remnants of two palaeo-Christian basilicas of the 5th century that where places that welcomed the worshippers until the pre-Christian years. In the sanctum many sailors had been frequent visitors because they had been travelling to the island in order to transfer marble. The sailors used to engrave on the stepping-stones the names of their beloved ones and theirs, too.
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.