Nestle-owned Perugina makes Baci, foil-wrapped nuggets of dark chocolate and hazelnut cream, and other confections in its factory in Umbria, Italy. Reservation-only tours begin at a small museum and move on to an up-close look at the large-scale, three-shifts-a-day world of chocolate production. Elevated walkways give you a bird's-eye view of the whizzing conveyor belts and vats, and plentiful samples are offered throughout your visit.

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