I thought of something like that before, however it was as a virtual reality experience. Have some sort of belt that brings you foods from different cultures and in the VR have something from that country (e.g. Eating Escargot in front of the Eiffel tower)
That is definitely an interesting concept!
I am very excited to see where virtual reality takes us, considering the potential for things like this.
Shameless plug here, but come join us at /t/virtualreality
Imagine how much space would have to be used for the kitchen, unless there would be a different kitchen for each culture (in which case, that would take even more space). Would waiters only serve one culture at a time? I wouldn't think customers would be looking to scale multiple flights of stairs to eat. I could see this working in a mall-like layout, where the stores are replaced by nicer restaurants. It allows for variety.
I see what you're saying. I think a single-floor layout would definitely be best for this type of restaurant. I was going to suggest small, contained kitchens and no waiters, but then there wouldn't be much differentiating this idea from say a food court, or a collection of food carts. I think having sections with distinct cultural ambiances would be neat. Perhaps there could be a collection of distinct culturally-themed rooms on a single floor, each limited to basic food and drink so that they do not occupy much more space than a bar, with perhaps a small kitchen in the back at the most.