Knivsta, Sweden
500-1000 AD
Katthammarsvik, Sweden
0-400 AD
Trelleborg, Sweden
3000 - 2500 BC
Högom, Sweden
500 AD
Strömstad, Sweden
500 BC
Uddevalla, Sweden
500 AD
Sandby, Sweden
c. 480 AD
Uppsala, Sweden
ca. 1000 BC
Mörbylånga, Öland, Sweden
3500 BC - 900AD
Upplands Väsby, Sweden
400-500 AD
Falköping, Sweden
ca. 3400 BC
Enköping, Sweden
1700-500 BC
Katthammarsvik, Sweden
100-1100 AD
Mörbylånga, Sweden
400 AD
Degerhamn, Sweden
300-500 AD
Tisselskog, Sweden
3000 BC
Åtvidaberg, Sweden
6th century
Varberg, Sweden
2500-2300 BC
Krokom, Sweden
6200 - 5500 BC
Offerdal, Sweden
7000 - 2000 BC
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.