The mansion on this site is the home of Gifford Pinchot, who was the Governor of Pennsylvania twice. You will realize the french origin of the Pinchot family when you see the French chateau structure of the house. It is open to the public for hiking on its trails and also for tours. This National Historic Landmark houses the Pinchot Institute, which is involved in the conservation and heritage protection of the site.
One of the oldest farmsteads in Phillipsburg, the Van Nest-Hoff-Vannatta Farmstead was founded in 1763 by John Van Nest, the property's original owner. Half of its share was sold to Abel Hoff during the early stages of the 19th-century, shortly followed by William Vannatta, giving the property its name. In addition to the already existing farmhouse, Vannatta chose to build a separate mansion for himself and his family, which also housed tenants till the early 1960s. Tours of the property can be arranged by appointment.