If your trip to Downtown Barcelona is all organized but your itinerary is looking a bit empty, let us give you a few hints and tips.While you're walking around the neighborhood, keep your eyes peeled for Gran Teatre del Liceu and La Rambla. There's plenty to keep you occupied at these awesome attractions.There are plenty of sights within close reach of this neighborhood's center, such as Barceloneta Beach. Barcelona Aquarium and Picasso Museum are a few other close-by attractions that lure loads of travelers like yourself.