If your trip to Downtown Houston is all locked in but your travel itinerary is looking a bit empty, let us give you a few hints and tips.Cool things to check out around this neighborhood? Downtown Aquarium and Toyota Center are right up there. Swing by and discover what the fuss is about.Leave that rental car back at the hotel and stretch those legs. Not far from the center of this neighborhood, Discovery Green is worth a visit. House of Blues Houston and Revention Music Center are a couple of other close-by sights that lure loads of travelers like yourself.