Rabati Castle in Akhaltsikhe, Georgia, was originally established in the 9th century as the Lomisa Castle. It was completely rebuilt by Ottomans. Most of the surviving buildings date from the 17th and 18th centuries.
According to the Georgian Chronicles the city was established in the 9th century by Guaram Mampal, son of the King of Tao. From the 13th to the end of 14th centuries it was the capital city of Samtskhe-Saatabago, ruled by the Georgian princely (mtavari) family and a ruling dynasty of the Principality of Samtskhe, the House of Jaqeli.
In 1393 the city was attacked by the armies of Tamerlane. Despite the Turko-Mongol invasions fortress withstood and continued to thrive. After the Treaty of Constantinople in 1590, the whole territory of Samtskhe-Saatabago went under the rule of Ottoman Empire. Turks Mostly used to build defensive edifices. In 1752 first mosque was built in Rabati.
Metropolitan John writes in the late 18th century that 'despite the fact that a large part of the population has been Islamized, there's still a functioning Orthodox church'. After the Treaty of Georgievsk between the Kingdom of Kartli and the Russian Empire was signed, the question of the fate of Akhaltsikhe arose. The first attempt to take the fortress in 1810 failed. Prince Paskevich successfully stormed the fortress 18 years later, in the great Battle of Akhalzic. After the Treaty of Adrianople in 1829, the Ottomans yielded part of Akhaltiske Region.
The fortress and its adjacent buildings were extensively rebuilt and renovated in 2011-2012 in order to attract more tourists to the area.
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.