the ancient stone walls of the corner tower in the korela kexholm fortress are the main attraction of priozersk, leningrad

ancient architecture bastion brick building citadel cloud corela corner countryside culture day defensive deserted exterior fortification fortress granite historic isthmus kakisalmen kakisalmi karelian kexholm korela landmark landscape leningrad medieval nature oblast priozersk region russia russian sky stone summer tower travel village vuoksen wall