If your trip to Lisbon Airport (LIS-Humberto Delgado) is all booked but your itinerary is looking a little empty, we can give you a few hints and tips.Once you touch down at Lisbon Airport (LIS-Humberto Delgado), steer your rental car in the direction of Castle of Sao Jorge. This iconic landmark is within an easy drive, so you'll be able to get your vacation started right away.Stay in the airport terminal or head out and soak up the sights? We know what we'd choose. It's certainly worth making the short trip over to Lisbon Oceanarium.Cruise straight from the airport to Commerce Square. Other attractions you shouldn't forget about are Lisbon Zoo and Vasco da Gama Shopping Centre.