The St Andrews Parallels

The St Andrews Parallels is an optical illusion that demonstrates how our brains interpret perspective. When viewed through a specially designed card, two different images—often a scene of St Andrews or similar locations—appear to be in perfect alignment despite being at different depths. It plays with depth cues, making distant and close objects seem connected or aligned when they're not in reality. This illusion helps illustrate how visual cues and context influence our perception of spatial relationships, highlighting the brain’s role in constructing our experience of the visual world.