Fort Zeller. The State's oldest existing fort is half a mile to the north. Pioneers who came to the Tulpehocken from the Schoharie valley built it in 1723, rebuilt it in 1745. It was used as a place of refuge during Indian wars. PA 419 (Main St.) at Ft. Zeller Rd., Newmanstown, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap