If you're ever in Zürich, be sure to visit the Lindt and Sprungli chocolate museum. Book ahead for tickets. It's got the entire history of how it was turned from something more like coffee into a dessert over the course of a series of process improvements, many of which were patented by names you hear regularly today in the Swiss chocolate industry and beyond (Nestlé, Lindt, Cailler, Sprungli).
