How many? Photo by: HinesĀ What am I looking at? It is hard to tell how many towers this building in Hartford, Connecticut, has and where one ends and the other begins. The illusion is caused by the reflection in the windows. More optical illusions:Impossible woodworkDeflated dogWhat Big Teeth you HavePainting of the OceanGravel flower bedDog Head MountStrained ExpressionBeach at Night