Philipsburg Manor is a historic site of great historical importance. Once the headquarters of an enormous Hudson Valley manor, the site vividly interprets aspects of the history of colonial New York and the system of racially-based slavery which helped keep the estate running in the 18th century. The visitor center at Philipsburg, located on Rt. 9 in the village of Sleepy Hollow, offers a wide range of services and changing exhibitions, and also serves as the visitor center for Kykuit, the Rockefeller estate.