The "Castle", built in 1879 by Frederick J. Stone, a gray stone mansion in a popular Romanesque Revival style located in Dobbs Ferry overlooking the Hudson River. Once known as "Castle Waltson," the home of famed orator and political speechmaker Robert G. Ingersoll, son in law Waltson H. Brown builder of railroads and daughter Eva Ingersoll-Brown a feminist and suffragist.