Olsborg Castle

Olsborg Castle, also Olofsborg, was a fortified castle located in Tanum Municipality, Sweden, in the province of Bohuslän. It is located on a steep cliff, and might previous to later use been an early hill fort. It was constructed in 1502 by the squire Nils Ravaldsson from Åby, after a recent Norwegian-Swedish rebel attack on Viken. Most of it was destroyed shortly after, when the commander of Bohus Fortress Otto Rud attacked on Christmas night 1504.After the turmoil created by the dethronement of the Danish king Christian II, the Swedes…