If your trip to Ciampino is all booked but your itinerary is a little on the empty side, let us give you a helping hand.Plan a stop at Palazzo Colonna. It's one sight you'll usually find on many visitors' must-do lists. Gotto D'Oro-Cantina Sociale di Marino and Abbazia di San Nilo a Grottaferrata are also a stone's throw away and worth a detour.