Keselo is a small medieval fortress just above the village of Omalo. The site is surrounded by the northern slopes of the Greater Caucasus Mountains. It is bordered in the north by Republic of Chechnya and Dagestan, in the east by the Georgian historic provinces Kakheti and Pshav-Khevsureti to the south.
Traditionally Tush peoples abandoned their villages and used towers as temporary shelters during raids on their villages. Keselo was constructed during the Mongol invasion of Georgia in 1230s. It originally had 13 towers. The inhabitants of old Omalo used the towers to protect themselves from the invading Mongols and later raids by Daghestani tribes.
By the 20th century, most of the towers were in ruins. However, in 2003, work began to rebuild five towers of the medieval fortress. The project was privately sponsored by Henk and Eliane Hooft, a Dutch family living in Georgia and later by the Keselo Foundation. The restoration was done in accordance with the medieval Tush techniques of constructing fortified towers. A monument was also erected in the nearby village of Dartlo and a tower in Khiso, on the road to Omalo, was also rebuilt. During the work, an array of archaeological artefacts, such as ancient rock art motifs and Bronze Age axes and jewellery, were discovered.
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.