This tall volcanic-rock outcrop is one of Cappadocia's most prominent landmarks and visible for miles around. Riddled with tunnels, it was used for centuries by villagers as a place of refuge when enemy armies overtook the surrounding plains. Climbing through its mazy core to the panoramic vantage point of its peak is a sublime way to watch the sun set over the rock valleys of the Cappadocian countryside.
The castle is a major tourist attraction, so try to go early or late in the day to avoid the tour-bus groups. The lack of barriers means you should be very careful – one photographer died when he fell over the edge after stepping back to get a good shot.