Historic Fallsington (4 Yardley Ave., Fallsington, 215/295-6567, www.historicfallsington.org [1], Tues.–Sat. 10:30 a.m.–3:30 p.m. mid-May– mid-Oct., Mon.–Fri. 10:30 a.m.–3:30 p.m. Nov.–Apr., $5) is a 300-year-old preserved Quaker village on the National Register of Historic Places that evolved around a central Quaker meeting house built in 1690.
There are nearly 90 structures, mostly simple in design, and you can enter several on a guided tour. The rest are privately owned, but you can wander around the village and see them from the outside.
Links:
[1] http://www.historicfallsington.org