The Germantown Historical Society is dedicated to preserving the rich history of German Township (now Germantown, Mt. Airy, and Chestnut Hill) in northwest Philadelphia. The museum and library collections total more than 50,000 objects, documents and photographs; items on display range from 17th-century German trunks to Victorian chairs to 20th-century Colonial Revival furnishings. Tickets: $2-3, children under 10 free. $10 research fee for library use. Tu 9 am-1 pm, Th 1 pm-5 pm, Su hours by appointment.