Pürnstein castle, towering high above the valley, was built in the late 10th century. It was first time documented in 1170. In the 13th century, the castle became into the possession of the Prince-Bishopric of Passau. The current appearance dates mainly from the mid-15h century. The castle chapel was consecrated in 1449. Part of the ruins of the original fortifications are also preserved to this day.
A fire on September 7, 1866 destroyed the entire interior with all wooden parts and the roof of the inner castle, only the chapel was spared. The cause arson is specified. However, parts of the buildings added later, most of the 17th and 18th centuries are habitable today. The current owner and the Association for the Preservation of the castle Pürnstein take care of preservation and renovation of the castle.
The castle is located on a north- west and steep terrain. The spacious facility has five semi-circular towers. The main door leads into the outer bailey. The main castle can be reached by the upper castle gate. The main castle is a large, hexagonal residential castle. The courtyard measures 17 x 13.5 meters.
In the central Palas are the knights' hall, living room, kitchen, chapel and the castle courtyard. The palace is surrounded by a defensive wall with five towers. The thickness of the walls is up to six meters.
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.