[pxndxx]

https://en.wikipedia.org/wiki/Quasicrystal

[tandr]

These articles should come with a warning "Giant rabbit hole ahead" on them...

[zokier]

And you can't talk about quasicrystals without mentioning this mesmerizing animation https://www.jasondavies.com/animated-quasicrystals/

For extra added fun, try blinking while looking at the animation