Winterthur is located in New Castle County, Delaware. Major attractions include Delaware Museum-Natural History and Brandywine Zoo. Winterthur is an unincorporated town and it gets its name from Winterthur Museum and Country Estate. Area schools include Widener University and the University of Delaware. Local businesses include Windcrest Animal Hospital Kennett Pike and Windthur Museum. One of the best places to visit when you are in Winterthur is Brandywine Creek State Park.