What is the most unusual restaurant you have ever been to?

For a short time, Salt Lake City had a restaurant called “Hare Hollow.” Yes, its main fare was rabbit. Unusual enough, but the freaky thing was that they had their own bunnies out on the grounds, hopping around, and the big windows in the restaurant looked out on the grounds. Interesting. You could watch the bunnies while you eat their friends. I do a lot of traveling, and would like to hear of other not-mainstream restaurants to visit. Thanks!