The Penrose Rectangle is what’s known as an impossible object, an optical illusion that is drawn to look like a three-dimensional thing that could never actually exist. If it’s hard to see at first, cover one half, then the other, and then look at it again—it’s a geometrically impossible shape.

Jonathan Harris draws objects in YouTube videos (including possible ones), but he’s created a a series of impossible object videos that are fascinating to watch and draw.

Try drawing a few more mind-boggling objects with the videos below: The Penrose Triangle, an Impossible Oval, and the Penrose Staircase.

Impossible forms are a TKSST favorite, as proven by the site’s logo. If you draw any impossible objects, share a photo with @thekidshouldseethis.

There are more optical illusion videos in the archives, including the not-to-be-missed work of Kokichi Sugihara, who builds impossible drawings in three dimensions.