Sunderland Passing Through Optical Illusion was sent in by one of our UK viewers. It was created in 1977 as by the St Peters Riverside Sculpture project, led by Colin Wilbourne.

sunderland anamorphic1.
sunderland anamorphic2
When viewed from an ordinary angle it just appears to be a skewed sketch on the wall.
But when you find the right angel. […]

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An anamorphosis is a deformed image that appears in its true shape when viewed in some “unconventional” way.
The Optical illusions below are created using the reflection of a spherical object to reveal the true picture.
Guinness reflection
Clown Reflection
Bird

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