23 acre park. Boyhood home of founding father John Jay and five generations of family, with 1838 Greek-Revival-style Peter Augustus Jay Mansion. 1907 Carriage House & Visitor Center with history exhibit open Wed-Fri. 10am-4pm (April through November and for programs all year). Jay Mansion open Sun. 2-5pm from April-Nov. and by appt. Docent-guided and self-guided tours.