The Church of San Esteban de Aramil is of the Romanesque style, popular between the 10th and 13th centuries, but the church itself cannot be dated more exactly. It was first mentioned in documents from 1240 concerning a donation of goods to the monastery of Valdediós by Alvar Diaz and his wife.
There are two theories concerning its origin; one is that it is the last remaining remnant of a monastery and the other is that it is a nobleman's church, which would have served both as the chapel for the castle and the church for the neighboring town.
The church has the classic features of Romanesque architecture; it has a rectangular nave terminated at the southern end by a semicircular apse. Sculptural ornamentation of the church includes the doors, located on the western side of the church and in the apse. The west door has a semicircular arch with two semiarches and screens that rely on separate columns. These columns are formed by shafts supported on bases that have carved lilies forming the columns' capitals, which are decorated with plant motifs. The southern section is less important in addition to being smaller although it is similar in design to the western door. The decor includes protruding sculptured heads, of Norman origin, showing various imaginary animals. There is a small central window in the apse.
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.