If you want to see the most beautiful sunset at Santorini, come to the ruins of a 15th century castle. The view will take your breath away!
More information on Santorini.com http://www.santorini.com/castlefortresses/oiacastle.htm
Address (Unnamed Road), Οία 84702, Greece
Coordinates 36°27'36.472" N 25°22'24.373" E