Ikalto monastery was founded by Saint Zenon, one of the 13 Syrian Fathers, in the late 6th century. It was known as one of the most significant cultural-scholastic centres of Georgia. An academy was founded at the monastery during king David the Builder by Arsen Ikaltoeli (Ikaltoeli meaning from Ikalto) in the early 12th century. The Academy of Ikalto trained its students in theology, rhetoric, astronomy, philosophy, geography, geometry chanting but also more practical skills such as pottery making, metal work, viticulture and wine making and pharmacology. According to a legend the famous 12th century Georgian poet Shota Rustaveli studied there.
There are three churches on the monastery grounds – Khvtaeba, Kvelatsminda and Sameba. The main church, Khvtaeba (Holy Spirit), was built in the 8th–9th century on the site of an older church (in which Saint Zenon had been buried). In 1616 the Persian invaders led by Shah Abbas I set the Ikalto Academy on fire and it ceased to exist.
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.