Port Discovery is Baltimore's children's museum, housed in the historic Fish Market building near the Inner Harbor. The museum has three floors of interactive exhibits designed for children from toddlers to tweens, including a three-story urban tree house climbing structure, an ancient Egypt gallery, and a science and invention workshop. It is well-designed and actively maintained, and very popular with Baltimore families on weekends and school holidays.
Adults accompanying children will find this one of the better children's museums in the mid-Atlantic region. The Fish Market building itself is an attractive 19th-century structure, and the location puts you within easy walking distance of the rest of the Inner Harbor attractions.