The Best Illusions of 2023 Contest

The mind-boggling winners of the Best Illusion of the Year Contest for 2023 have been announced. The entries for each the ten finalists include a video that demonstrates each illusion and then shows how it works. The top prize winner is this working model of Platform 9 3/4 from the Harry Potter books:

One of my favorites is The Poggendorff Triangles, which goes to show you that straight lines aren’t always straight:

Here’s an audio illusion that sounds as though the tempo is endlessly rising (similar to the Shepard tone):

And then there’s this hollow face illusion in which this woman’s face looks at you as you move around her:

You can check out the rest of the finalists here.

• best of
• best of 2023
• optical illusions
• video