You simply cannot be in Baltimore without visiting the National Aquarium. You can pet sting-rays, watch a dolphin show, and learn more about sea life than you ever wanted to know. Every few months or so they have a different main display. In winters on Friday nights, there is usually admission for $5, a real bargain, but its worth the price of regular admission to avoid the crowds. And definitely don’t miss the monkeys in the tropical rainforest.
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