oskar-fredriksborg fortress is one of the defense positions in the stockholm archipelago, sweden

waterway river water landmark canal tourism reflection castle building estate town tree reservoir fortification bridge tower ruins sea vehicle oskarfredriksborg fortress one defense positions stockholm archipelago sweden cloudy morning old vaxholm landscape europe summer sky travel architecture house city island nature history historic fredriksborg boat stone rock clouds lake swedish rind blue medieval ancient scandinavia baltic oscar coast white beach forest scenic panorama coastline lonely