Lyse Abbey was founded in 1146 by Sigurd, Bishop of Bergen, on farmland that he owned, as the Christianisation of Norway was nearing completion. The first monks were brought from Fountains Abbey in Yorkshire, England. This was the first Cistercian monastery in Norway and was modelled on others built in England and France.
As with all Cistercians, the monks took a vow of poverty. Renouncing all sources of income except from farming, they developed considerable skill in farming operations and management. Over time, this led to the abbey acquiring many other farms in the area, making it ever more rich and powerful. In all, the monastery had about 50 other farms in Os with at least as many more in other areas.
The abbey was dissolved in 1537 when Christian III of Denmark decreed Lutheranism to be the state religion of Norway. The abbey’s possessions were confiscated, becoming the property of the King. Over the next two centuries, the stones of the monastery structures were gradually removed and contributed to buildings such as the Rosenkrantz Tower in Bergen, and Kronborg Castle in Helsingør in Denmark. Some stones were shipped as far as Germany.
The ruins are protected as a national monument and archaeological work to preserve and record the site continues. The monastery is a well-visited tourist site with good nature walks nearby. It is common for couples today to be married at the ruins, or at least to have wedding photographs taken there.
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.