A fort at the site of Itter castle was first mentioned in a 1241. The previous constructions may have existed since the 10th century. The Brixental originally was a possession of the Prince-Bishops of Regensburg; the castle was an administrative seat of the Counts of Ortenburg in their capacity as Vogt bailiffs, it also served to protect the Regensburg estates from incursions undertaken by the neighbouring Archbishops of Salzburg. Nevertheless, the Brixental was acquired by Salzburg in 1312 and in 1380 the Regensburg bishops finally sold Itter to Archbishop Pilgrim II of Salzburg.
The castle was devastated during the German Peasants' War in 1526. In the 17th century, the seat of the local administration was moved to Hopfgarten, whereafter the premises decayed. After 1805 the castle was left to citizens who used it as a quarry.
The present-day building was erected on the foundations of the former one from 1878 onwards. Itter Castle was purchased as a residence in 1884 by Sophie Menter, pianist, composer and student of Franz Liszt. Liszt himself as well as young Arthur Rubinstein stayed at the castle, Pyotr Ilyich Tchaikovsky orchestrated one of his compositions during a visit in 1892. Menter sold Itter Castle in 1902, it was again extensively remodeled in its present Tudor Revival style by later owners.
In 1943 Itter castle was transformed into a prison. Established to incarcerate prominent French prisoners valuable to the Reich, the facility was placed as a subcamp under the administration of the Dachau concentration camp.
After the war, the castle fell into disrepair until 1950 when Willi Woldrich acquired it and turned it into a luxury hotel. However, the hotel encountered financial problems and it was acquired by a holding company before it was sold to a private owner in 1985. Since that time, it has remained in private ownership and is not open to the public.
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.