Take a look at the picture given below, the image is of a board full of words. All the words are the same; Bell. However, ...

For less terrifying optical illusion murals see these brilliant artworks made with a spray can. And if you want to continue ...

This illusion – named Pinna's Illusory Intertwining Effect – first appeared in Shifts of Edges and Deformations of Patterns written by Baingio Pinna and Richard L Gregory, an academic journal ...