This is the ruins of Steinvikholm castle. Constructed 1524 - 1532. It may have looked like this during the siege by Danish troops in 1537. The castle was erected by arch bishop Olav Engelbrektsson. Back then Norway was in an union with Denmark and Olav was the chairman of "Riksrådet", the official governmental body ruling Norway on the behalf of the Danish king. He was in opposition of the union and wanted independence from Denmark, which was the stronger part in this relationship. The Danish church was undergoing the reformation at this time, but Olav wanted Norway to remain Catholic. Exactly why Olav had this castle built is unknown but in 1537 it was Norway's last stand against total domination of Denmark. Although being very strong, cleverly built and modern for it's time, the defenders gave up their resistance after a short skirmish. Olav had already given up his resistance and had fled to The Netherlands where he died. The castle were in use a couple of decades before it was left to ruin. If you master Norwegian, a more detailed background story can be read here. (.pdf file!).