It might provide a place to rest your weary legs, but this United Colors for Benetton chair designed and built by Pereira Miguel Architects will give your brain a good workout as you try and and comprehend where its curvy frame begins and ends.

It's technically not a true möbius strip, though, lacking the requisite twist that would give the bent plywood frame a continuous single side. But the effect is convincing enough. The use of rope webbing instead of a cushion also provides a lovely hammock-like effect, not too mention a means for crumbs, remotes, and lost currency to simply fall through to the floor. [Pereira Miguel Architects via Notcot]