Historic Hudson Valley is a nonprofit organization that focuses on celebrating and revitalizing historic sites across the Hudson Valley region. It was founded to preserve Philipsburg Manor, an important historic site that was in danger of demolition in 1940. Wealthy philanthropist John D. Rockefeller helped purchase Philipsburg Manor and later established Sleepy Hollow Restorations to restore other nearby landmarks. Today, Historic Hudson Valley continues operating Philipsburg Manor and other historic sites to educate the public about history in the Hudson Valley region.