Baltimore is a major city in Maryland with a long history as an important seaport. Fort McHenry, the birthplace of the U.S. national anthem, “The Star-Spangled Banner,” sits at the mouth of Baltimore’s Inner Harbor. Today, this harbor area offers shops, upscale crab shacks, and attractions like the Civil War–era warship, the USS Constellation, and the National Aquarium, showcasing thousands of marine creatures.