We enjoyed an hour and a half tour filled with chocolate samples at the Perugina factory outside Perugia. It’s an interesting story of the founders and includes a catwalk over the entire factory floor. You must make a reservation online ahead of time. You can choose whether you want an English tour or an Italian tour.
The way into the factory is a little tricky. The entrance to the parking lot is gated so you must stop and tell them you have a reservation to raise the gate. After that, it’s clearly marked.