>In the nineteen-nineties, computer scientists began programming virtual termites that built “walls” via the principles of stigmergy. These virtual termites could build two-dimensional shapes, but they could not produce anything like the complex three-dimensional architecture of real termites.
> https://www.youtube.com/watch?v=yk3PpRVshtY
(EDIT: Video with better audio quality, but unluckily annoying comments:
> https://www.youtube.com/watch?v=n0R_U3S1JUE&t=503