Great heights Source/credit: Cemal Yıldırım What am I looking at? This is Gülek Castle in Turkey. Perspective is everything. Tourists love using Forced Perspective to make it look like the person is at great heights above the highway. More optical illusions:A Galaxy Far AwayRaw ChickenThe Pensive Olive TreeEye of GodShadow catA Festival for AntsGoblin spy on a planeFlying cat