Differdange Castle was built in 1577 although an earlier fortified castle of Differdange dates from around 1310. The first lord of the castle was Wilhelm, brother of the Lord of Soleuvre, who is mentioned in documents from 1310 when he owned a fortified castle. However, the lords of Differdange lasted only until the death of Wilhelm's grandson around the year 1400. When Soleuvre Castle burnt down in 1552, the owner Anna von Insenburg decided not to repair it but to build a Renaissance-style residential castle in Differdange serving both Soleuvre and Differdange. At the beginning of the 20th century, the castle came into the hands of the local steel industry, now Arcelor Mittal who used it as a hotel and a restaurant for its staff.
Differdange Castle is probably the earliest example in Luxembourg of a château built entirely in the Renaissance style. It was originally intended both as a residence and a fortification with a moat and draw-bridge (now both removed) as well as loop-holes. It is constructed fully in accordance with the principles of Renaissance architecture, especially the use of the square both for the courtyard and the outer walls of the three buildings which surround it. The rectangular cross-framed windows are typlical of the period. The octagonal towers which are slightly higher than the central building provide balance between the horizontal and vertical dimensions.
Since 1997, the castle has been let to Miami University for use as its Miami University Dolibois European Center.
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.