National Aquarium - Baltimore

Steve’s take

The National Aquarium is world-class and it sits right on Baltimore's Inner Harbor. Dolphins, sharks, a rooftop rainforest — it's the real deal. Yes, parking in Baltimore costs more than some of the fish are worth. Yes, it adds half a day to your trip. But if you're driving past Baltimore anyway and the kids need a big stop, this is the one. Book tickets online. The walk-up line wraps around the building.