Japanese Kit Kats
So, this isn't a place to visit but, more of a favorite treat exclusive to Japan. Japanese Kit Kats come in unusual flavors and combinations that are unique to each city you visit. For instance, there's Matcha Kit Kats, Soy Sauce Kit Kats, Sakura Kit Kats, and (as pictured) Sake flavored Kit Kats. In Tokyo Station, there's a Kit Kat Store Front where you can buy them in bulk and try samples. The other best locations to find these are usually in Duty Free shops, Don Quixote shops, and either airport.