Cales Coves is an emblematic and spectacular prehistoric necropolis, both for its setting and for the large number of tombs in it. They take the form of a set of cavities excavated from the rock walls of the ravines and coastal cliff faces (about 90 altogether), used by local communities to bury their dead. Several types of cave have been documented. The necropolis was used for about 1000 years, from the 11th century BCE up until the Romans took control.
In the Roman era, despite no longer being in use as a necropolis, a series of inscriptions on the cave walls testify to their use as a place of pilgrimage, as can be seen in the famous Cova deis Jurats. Calescoves was also a major anchorage port, especially between the 4th century B.C. and the 6th century A.D., with ships arriving from powerful trading nations along the Mediterranean coast.
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.