The Čertovy hlavy ('The Devil Heads') are a pair of 9 metre high rock sculptures in the municipality of Želízy in the Central Bohemian Region of Czech Republic.
Čertovy hlavy were created by Václav Levý in 1841-1846. In terms of dimensions, it is a unique work in the Czech Republic. They are the second largest carved heads in the world, after the carvings of Mount Rushmore in the United States.
The sculptures have been damaged by time and weather. In 2011, the private owner had the surrounding pine forest cut down, allowing the heads to be seen from the I/9 road. Further sandstone reliefs can be found near the Čertovy hlavy, known as Harfenice ('Harpist') and Had ('Snake') reliefs.
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.