Visualization of the self-similarity of the Menger sponge in loop the gif.
<a href="//commons.wikimedia.org/wiki/User:PantheraLeo1359531" title="User:PantheraLeo1359531">PantheraLeo1359531</a> (looped gif by <a href="//commons.wikimedia.org/wiki/User:Jahobr" title="User:Jahobr">Jahobr</a>)
CC BY-SA 4.0
<a href="//commons.wikimedia.org/wiki/File:MengerAnimation08082019x265.webm" title="File:MengerAnimation08082019x265.webm">File:MengerAnimation08082019x265.webm</a>