1) Castle in Bohuslän
Found on
https://www.crosswordclues.com/clue/carlsten
Carlsten is a stone fortress located at Marstrand, on the western coast of Sweden. The fortress was built on the orders of King Carl X of Sweden following the Treaty of Roskilde, 1658 to protect the newly acquired province of Bohuslän from hostile attacks. The site of Marstrand was chosen because of its location and its access to an ice free port...
Found on
http://en.wikipedia.org/wiki/Carlsten
(from the article `lighthouse`) ...However, the greatly increased intensity and the advantage of using a pattern of flashes to identify the light gradually overcame their ...
Found on
http://www.britannica.com/eb/a-z/c/26
No exact match found.
