Over time, many artists, including M.C. Escher, began to use the Penrose stair as a source of inspiration in their own work centered around the idea of impossible objects and scenes.

Christopher Nolan’s film Inception features a classic optical illusion called the Penrose staircase, which folds back upon itself in space. World-renowned puzzlemaker and LEGO constructor Eric ...

With impossible objects like the stairs above, those two pathways in your gray matter fire back and forth more than usual, trying to come to a conclusion. But they can’t, resulting in an uneasy ...