Lysimachos, Alexander the Great's general, built this citadel at the summit of Mount Pagos -- though given its strategic location, it was probably constructed on the foundations of an earlier civilization. It's now a seedy playground used by the underprivileged, making a stop up here often unpleasant; surely Alex would kick the butts of those pretzel-selling urchins were he alive today. Nevertheless, on a clear day you'll swear you can see as far as Greece from atop the remaining ramparts.