Cafarlet or Capharleth (Crusader name) or Kafr Lam (Arabic name) is an Early Muslim coastal fortress of the Roman castrum type. Today it is located inside Moshav HaBonim, Israel, on lands of the now abandoned Arab village of Kafr Lam. It was built in the 8th or 9th century, during the Umayyad or Abbasid period to serve as a ribat against Byzantine attacks, and was significantly modified and reused by the Crusaders. It is one of the few surviving ancient fortifications in Israel featuring round watchtowers, indicating the fortress' origins predate the crusader era. Most surviving ancient fortifications in the region feature rectangular watchtowers, typical of the style prevalent in Europe during the time of the crusaders.
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.