The castles of Mystras should be seen by every visitor to the area. Across the valley from Mystras is the magical Yeraki, where there is a fortress built as early as 1209 by Frankish baron Guy de Nivellet. Yeraki is at a height of 500 meters, and also boasts the well preserved Byzantine church of Saint George. It is reputed that the people of Monemvasia, Yeraki and Mystras kept in contact through smoke signals.
