Exhibits detail the history of Portsmouth and the structure itself. Open May - October. There is an admission fee. This museum sports a variety of exhibits involving 19th century history, including furniture, artwork, the area trolley system, farm implements, fire-fighting equipment, and a schoolhouse from the 1840's. Open June - September.
Admission is free.
The focal point of this park is an exhibit of life on a modern submarine. Visitors will tour the sub and view all its compartments. There is an admission fee. Exhibits include a dinosaur dig, music room, submarine play structure, lobster boat and space shuttle cockpit. Primary Place on the museum's third floor features soft climbing structures and developmental toys for children four and younger.