Strawbery Banke Museum, an outdoor living history museum, opens its historic houses and gardens for self-guided tours 7 days a week. Tickets are valid for TWO consecutive days. Strawbery Banke Museum, in the heart of historic downtown Portsmouth, New Hampshire, is a 10-acre outdoor history museum dedicated to bringing 300+ years of American history to life. The Museum is a place for children, adults, multigenerational families and groups to gather to explore heritage gardens, historic buildings, crafts, preservation programs, hands-on activities, stories told by costumed role-players and the changing exhibits that offer hours of fun and discovery. The Museum’s restored buildings and open space invite visitors to immerse themselves in the past.