If your trip to Frattocchie is all organized but your itinerary is looking a bit empty, we can give you a few hints and tips.Plan a stop at Papal Palace of Castel Gandolfo. It's one sight you'll usually find on many visitors' must-do lists. If you still have some room on your itinerary, Palazzo Colonna and Gotto D'Oro-Cantina Sociale di Marino will keep you on the go as well.