Rauenstein Castle guarded the crossing over the River Flöha along the road from Freiberg to Annaberg. The castle is first mentioned in 1323, although from archaeological investigations it is postulated that it had been built by around 1200. The first lords of Rauenstein were the Schellenbergers.
After several changes of ruler, the castle went into the possession of the Electorate of Saxony in 1567. The Amt of Rauenstein was given to Wolkenstein in 1596. Around 1630 large structural changes were made. The road tunnel also dates to this time.
From 1651 to 1743 the castle was rented to the von Römer family, who had become very wealthy as a result of silver mining in the Schneeberg area. Its owner, Christian August Hähnel, who had bought Rauenstein in 1816, his nephew, Wolfgang, Freiherr von Herder (owner from 1843 to 1853) and another family member, Wilhelm Freiherr von Herder, were members of the Saxon Landtag. The next owner, Gottfried Freiherr von Herder, was a German Conservative Reichstag MP from 1893 to 1898.
After its confiscation as part of the land reform in the Soviet Zone of Occupation in 1945, the castle was used as a children's convalescent home. It has been owned by a private family since 1998 and may now only be viewed from the outside.
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.