Janowiec Castle was most likely built by Mikołaj Firlej between 1508 and 1526, on a steep Vistulan hillside in Janowiec. It expanded by his son, Piotr, the Voivode of the Ruthenian Voivodeship. The bastion, used as a residence, was destroyed by the Swedish army in 1655 during The Deluge.
Although the following owners of the castle did their very best to rebuild the castle, the castle never managed to regain its former glory. In 1928, an archaeologist, Leon Kozłowski had taken over the castle, but his plans to reconstruct the castle were stopped by the Second World War. After the Second World War, the castle was left in its former state, being one of many private castles. In 1975, the castle was bought by the Nadwiślańskie Museum in Kazimierz Dolny in Poland.
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.