Just google ducati factory tour and fill in the details. You will receive confirmation in a couple of days. Reservation is a must. Ducatistas who travelled halfway round the globe had been denied entry, since they didn't have reservations. I will repost the pix for those who can't view it later in the week when I get home.
Of all the places I've been. Italy gets my vote for the most hotties in town. Specially Milan.