hayravank monastery and stone crosses khachkars at the shores of lake sevan, armenia

building castle monastery ruins tower fortification landmark estate tree house chapel church village wall town hayravank stone crosses khachkars shores lake sevan armenia located monastery armenia church lake hayravank sevan religion travel medieval lakeshore trip tourism orthodox architecture christianity ancient armenian landmark history outdoor old vacation religious stone caucasus cross popular travel destinations landscape attraction shore picturesque autumn famous place culture view tour