The Kvatakhevi monastic complex is situated near the village Kavtiskhevi at the end of the gorge cut by a stream in the northern slopes of the Trialeti Range, protected on three sides by the steep mountain slopes. It dates to the 12th-13th century, and resembles the monasteries of Betania, Pitareti, and Timotesubani in its architectural form and decoration, reflecting a contemporary canon of a Georgian domed church architecture. The overall plan is nearly a square, with the dome resting upon 2 freely standing pillars and 2 pillars fused with the ledges of the altar. The internal space of the church is formed by the arms of the cross and the dome which surmounts the crossing point.
The building has two portals, one to the south and one to the west. The façades are covered with finely hewn white stone squares. The decoration abounds in fretwork, especially around the windows and the base of the dome; the eastern façade is adorned with a large ornate cross.
Historically, Kvatakhevi was also a literary center where several manuscripts were copied. It also possessed a treasure with many artifacts of medieval Georgian jewelry, a sizeable portion of which was later acquired by and are now on display at the Moscow State Historical Museum.
The monastery was significantly damaged during Timur's invasions of Georgia in the 14th century, but was subsequently repaired, more completely under the patronage of Prince Ivane Tarkhan-Mouravi in 1854. A belfry was added in 1872.
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.