Annual house tour will spotlight properties in Tredyffrin, Easttown The Duportail House will be the starting point of the Ninth Annual Historic House Tour in Tredyffrin and Eastttown Townships. Photo courtesy of Carla Zambelli The Ninth Annual Historic House Tour will take guests behind the scenes of nine historic, premier properties in Tredyffrin and Easttown Townships on Saturday from noon to 5 p.m....