Castell Henllys (Welsh, 'castle of the old court') is an important archaeological site in north Pembrokeshire. The Iron Age hillfort has been the subject of an ongoing excavation for more than twenty years, accompanied by an exercise in reconstruction archaeology whereby experiments in prehistoric farming have been practised. Four roundhouses and a granary have been reconstructed on their original Iron Age foundations, some 2,000 years old, the only site in Britain where this has been done.
To the north of the site, where the entrance was, there are significant earthworks in the shape of several ditches and banks. Inside these fortifications, archaeologists have found evidence for numerous Iron Age roundhouses dating to between 500 and 100BC. Adjacent to the fort they discovered a farmstead settlement, which is believed to have been occupied throughout the Romano- British period.
During the summer the site provides training for young archaeologists and is a popular visitor attraction. It is owned by Pembrokeshire Coast National Park.
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.