Have you ever noticed how various objects and buildings look as if they have faces – are smiling, being angry or surprised. However, what some call acuity to detail that is often attributed to a psychological phenomenon called Pareidolia – that is when a person perceives a stimulus randomly as meaningful, for example, see faces in clouds or buildings.
You can also be more common among people with a wild imagination. Leonardo Da Vinci once wrote that when an artist is about to invent and paint a scene, he will be able to visualize on virtually any surface. So if you happen to see a strange face on a wall from time to time, do not worry – you are probably perfectly normal.
I Assure You There Are hallucinating. The 23 Faces Hide In More Everyday Objects.