To visit the Wonka-esque world of Perugian chocolate, call ahead to latch onto a 1¼-hour guided tour (in Italian or English, times vary). After visiting the museum, you'll wend your way through an enclosed sky bridge, watching as the white-outfitted Oompa Loompas, er, factory workers, go about their chocolate-creating business.
Check the website for the calendar of three- to four-hour chocolate-making workshops. Held at 10am and 3.30pm on Saturdays, they cost between €50 and €70. Drive through the gates of the humorously nondescript factory entrance marked Nestlé, or take the bus to San Sisto (€1.50, 25 minutes).