I'm not sure if it's really "multi-modal", but I'm entranced with compact living situations that make the most of a small space. It was one of the things that I really found quite fascinating about the Fifth Element movie:
I recently saw a video about a "transformer apartment," designed by architect Gary Chan, in Hong Kong:
Now, I don't know if the hype about it changing into 24 rooms is really true (or is just about combinations of configurations). Still, working a 330 square-foot apartment into such a thing is really, really cool.