Mathematical exhibit that represents a Menger sponge, available on the collection of Matemateca IME-USP
Exhibit made by Carla Teodoro to the <a href="https://en.wikipedia.org/wiki/MegaMenger" class="extiw" title="w:MegaMenger">MegaMenger</a> Project, photo by Matemateca
CC BY-SA 4.0
Matemateca (IME/USP)