The Café Wall Illusion is a visual phenomenon where parallel lines appear to be slanted or curved due to the arrangement of contrasting tiles. This effect is created by alternating dark and light tiles, which trick the brain into perceiving distortion in the straight lines. This illusion was first observed in a café in Bristol, England, where the tiled wall created this surprising effect. The Café Wall Illusion highlights how our perception can be influenced by surrounding patterns, demonstrating the complexities of visual processing in the human brain.