Locust Hill, situated amid the rolling farmland of eastern Madison County, is a well-preserved Federal- and Greek Revival–style residence associated with a school, a store, and domestic and commercial outbuildings that comprise the hamlet of Locust Dale. The original section of the two-story frame house was apparently built in 1834 by Travis J. Twyman, who enlarged the house to its present form about 1849. Notable architectural features include a two-level front porch, fine mantels, and well-preserved original grained woodwork. The house was later acquired by the scholarly Willis family. Larkin Willis II taught at the nearby Locust Dale Academy, and his daughter, Mary Lucy Willis, taught public school in a one-room schoolhouse built in 1897 that still survives on the property. The Willises added a greenhouse, a summer kitchen, and a curious two-story hip-roofed bathroom tower to the house. The property also contains the Locust Dale Store and Post Office, a well-preserved 1880s frame commercial structure located across the street.