The Château des Guilhem was built for the Guilhems, lords of Clermont-l’Hérault, at the end of the 11th and beginning of the 12th centuries. The castle stands on Puech Castel hill, overlooking the town and surrounding country. The strategic site permitted control of the Hérault valley and the road to Bédarieux and the higher cantons, as well as the feudal town which was itself fortified soon after the castle was built. There is some evidence that earlier buildings existed.
After a number of troubled periods when the castle provided shelter for the local population, it was slowly abandoned from the 16th century. Owing to its largely abandoned state, it escaped the widespread destruction of castles by Cardinal Richelieu. However, its abandonment and the ravages of time have caused serious deterioration: the only remnants are the fortifications, two vaulted halls and the Guilhem Tower (tour Guilhem) which still stands above the town.
The castle site is open daily to visitors, though access to the tower is not possible.
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.