Santa María de Montederramo's origins seem to have been the old Church of San Juan, which grew into a monastery. It was founded as a Cistercian monastery by Doña Teresa, Alfonso VII´s daughter, in 1142, bringing French nuns from Claraval. Other writers refer to it as Cistercian in the year 1153, when it adopted the worship of St. Mary.
In the year 1528, it joined the Cistercian Congregation, in Spain, with the building´s reconstruction beginning at that time, including the church, with most of the work taking place during the 16th century. The slender church stands on a Latin-cross ground plan, with three aisles in five sections along the main arm; side arms marked on the ground floor, five rectangular chapels, the central the main one. The aisles have Ogival, ribbed vaults, with lunettes and coffering. In the transept, there is a dome over pendentives with cupola. The facade flay and austere. The church was begun in the year 1598, with Juan de Tolosa as master-architect, from the Company of Jesus, and creator of the Hospital of Medina del Campo, in addition to other builders. Construction work ended in the year 1607, inscreibed on the facade.
The monastery has two cloisters, the oldest of which is in evolved Ogival style, square, with five semi-circular arches per side and nine-pointed star-vaults; the upper part has Renaissance and Baroque arches and windows. The second cloister is square, elegant, with four semi-circular arches per side over free-standing Renaissance columns, and sculpted medallions and shields, all dating from the 16th century. It also has a large, monumental stairway down to the church and a fine sacristy.The regular or processional cloister is connected to the church. In the early 1980s this area was rescued from a state of ruin, and once restored it began to be used as a school.
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.