Impossible Stairs

thingiverse

The Impossible Stairway, also known as the Penrose stairs, is a two-dimensional representation of a staircase that appears to defy logic. The stairs make four 90-degree turns as they rise or fall, yet somehow form a continuous loop. This conceptual impossibility plays tricks on our perception, making it seem like someone could climb forever and never reach a higher level. Watching the video below provides the clearest understanding of how this optical illusion works. https://youtu.be/VAAZBhA8Pfc To build your own Impossible Staircase, follow these instructions: https://www.instructables.com/id/Impossible-Staircase/