National Aquarium

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In a city full of amazing architecture, the National Aquarium stands out. The angular, modern building houses more than 17,000 species and receives 1.5 million visitors annually. But the nonprofit organization's efforts do not stop there. They are involved in conservation of the Chesapeake Bay and Baltimore which is inhabited by a very diverse wildlife. They are also active in rescuing and rehabilitating wild animals. The price of admission supports these endeavors.