Portsmouth is a New Hampshire port city on the Piscataqua River. Notable 17th- and 18th-century houses include several within Strawbery Banke Museum, where costumed staff demonstrate traditional crafts. Nearby, the 1855 North Church presides over downtown’s Market Square. Prescott Park has riverside gardens and boat docks. Northwest, former research submarine USS Albacore is in a park, alongside a visitor center.