Another name for the Münsterberg illusion, so called because a cafe in Bristol city, England, is tiled on the outside with the pattern that creates a vivid example of the illusion (see illustration). See also lavatory wall illusion. [Named by the English psychologist Richard L(angton) Gregory (1923–2010) in an editorial in the journal Perception in 1972]
Cafe wall illusion. The horizontal lines are all parallel.