If your trip to Santo Antonio is all locked in but your itinerary is a bit on the empty side, let us give you a few hints and tips.Set your rental car's navigation to guide you to Castle of Sao Jorge. As one of the most famous attractions in Santo Antonio, you'll want to ensure it's top of your must-see list.Greatest things to look at around the neighborhood? Rossio Square and Gulbenkian Museum are right up there. Swing by and find out what the fuss is about.Give that rental car a rest and use those feet. Not far from this neighborhood's center, Commerce Square is worth a visit. More adventure is waiting for you at Marquis of Pombal Square and Botanical Garden, which are also nearby.