Blumenstein Castle is a castle ruin in the Palatinate Forest probably constructed in the first half of the 13th century as part of a line of defensive castles along the Alsatian border. The castle was first mentioned in 1332 in connection with knight Anselm from Batzendorf near Blumenstein. After a feud with the House of Fleckenstein in 1347, the knight was banished from the castle.
About 1350, the counts of Zweibrücken had one quarter of the castle, the House of Dahn owned the rest. Blumenstein castle was probably destroyed in the German Peasants' War in 1525. The ruin passed from the counts of Hanau-Lichtenberg to the landgraves of Hesse, then to the bishopric of Speyer and finally to the state of Rheinland-Pfalz.
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.