The Baltimore National Aquarium is home to 660 species of animals and more than 16,000 specimens. Known as one of the best aquariums in the country, it is a top tourist attraction in the state. The aquarium's exhibits are housed in three buildings. Pier 3 Pavilion houses six levels of exhibits. Pier 4 Pavilion is home to the Atlantic Dolphins exhibit and Jellies Invasion and the Glass Pavilion contains the Animal Planet Australia.

The Aquarium is located in Inner Harbor in Baltimore, steps from the Baltimore Maritime Museum and the USS Constellation, Port Discovery Children's Museum and Harborplace and the Gallery. Travelers have convenient lodging locations with Best Western hotels, while visiting Maryland.