The Cailler chocolate factory at Broc, a short drive or bus ride from Gruyères, offers one of Switzerland's most popular industrial visits. The tour takes you through the history of chocolate from its Central American origins to the development of Swiss milk chocolate, then through a series of theatrical rooms designed to engage the senses — culminating in a generously stocked tasting room where you can sample the range at leisure.
The combination ticket that covers both La Maison du Gruyère and Maison Cailler is popular with families and makes geographic sense — the two are only a few kilometres apart and together offer a thorough survey of what the Gruyère valley is actually famous for producing. Broc itself is an ordinary working village, but the factory visit is well worth the slight detour.