Travel tips on how to spend a day in Lisbon Portugal on your cruise - by Sherry Laskin, Cruise Maven 16.08.2013 | Fado. Pasteis. A glass of port. There is so much to see, do, hear and taste in Lisbon that it’s not an easy task to cram it all into one day. But I tried. Not directly on the ocean, Lisbon is several miles inland on the Tagus river. Plan ahead so that you’re able to be on deck for the cruise into Lisbon harbor. Photo: Fado Museum in Lisbon.