After we disembarked the Princess Emerald in Venice, we took an extra week touring Italy via the train.  From Venice to Florence to the leaning Tower of Pisa and in Rome the Vatican museums, Sistine chapel, monumental St. Peters square and Basilica.  We crossed the Tiber and visited the Coliseum and the Roman Forum.  From Venice to Rome and Civitavecchia to Naples, we saw the best of Italy and still didn't see it all.