Joint Walk with Urban Trail Conference —Enjoy an approximately 4-5 mile loop walk, easy-to-moderate, mostly on the Old Croton Aqueduct trail. We begin at the ruins of Rockwood Hall, built in 1849 and purchased by Wm. Rockefeller, John D. Senior’s younger brother, in 1886, before John D. began acquiring and building what later became Kykuit. We cross the Archville bridge, which replaced the earlier bridge that carried the Aqueduct over Rt.
