Hi, my sisters and I are going on a cruise that includes a stop in Citavvecchia and are trying to come up with a shore excursion that doesn't include the standard sites like the Coliseum, Vatican,etc. We've been to Rome before and have seen those sites so would like to do something else.   I would like to see the catacombs but haven't seen a shore excursion that includes them. I was thinking of Tivoli and Hadrian's estate but was wondering if anyone had done those as shore excursions