The nature of the Po Delta and the Byzantine mosaics of Ravenna.
Day 1: Arrival in Cremona and accommodation in a 4 star hotel in the historical city center. Guided city tour including the Violin Museum and its collection of ancient instruments, and the visit at one of the 150 violin maker workshops. Dinner at the restaurant "Il Melograno" tasting a typical seasonal menu. Overnight stay at the hotel.