The dome of the Duomo di Pavia is the third (or maybe the fourth) for size in Italy, after St. Peter’s Basilica, the Pantheon, and Santa Maria del Fiore in Florence. It is now possible to visit the Cathedral until January 8th 2012: it was closed after the fall of the Civic Tower in 1989.

See the Diocesi site for more information about opening days and hours, and Trenitalia or Trenord site for train timetable.