The "Old Fort", the Phillip J. Weisse/J. Schoenheit Farm, is located on East Mill Road (Route 24) and was constructed between 1714 and 1876. As with many historic structures the reports on the Old Fort are contradictory. The building is said to be one of the oldest houses in the township, with the majority of it's present form dating from 1774, but other structures are known to precede this building. Further, it is recorded that, "it was rebuilt in 1876 by Mr. Shonheit" (Munsell, History of Morris County, New Jersey p. 374).

An exterior inspection of the house gives some evidence to its reputed 18th century erection date. The house is a 2½ story rectangular random fieldstone building with gable roof and exterior end brick chimneys. The proportions present an 18th century origin, but the overall appearance is Victorian. The house is currently stucco covered, has 2/2 Victorian windows with ltalianate framing, a late 19th or early 20th century one story porch, an overhanging gable roof with returns and bracketing, two round head dormers separated by a large somewhat Eastlake appearing center dormer, and slate roof with alternating scalloped and rectangular rows of shingles. While all these characteristics are 19th century, the 18th century erection date should not be disregarded.