Aldealseñor medieval palace once belonged to the López de Salcedo family, due to the fact that on the façade you can see their coat of arms. It was built between the 14th and 16th centuries and it has a great tower that stands 26 metres tall. Due to the orientation of the tower, instead of being used as a defensive structure, it seems to have been just a decorative feature of the palace. The spectacular façade has two entryways, beautiful ashlar windows and doors, and the coat of arms and medallions.
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.