An official Path Through History Site! Seven generations of the socially-prominent Livingstons lived at Clermont, a National Historic Landmark. The riverside mansion's most notable resident was Chancellor Robert R. Livingston, who drafted the Declaration of Independence, negotiated the Louisiana Purchase, and teamed up with Robert Fulton to develop the first steamboat, the North River Steamboat later, know as "the Clermont”. Mansion tours offered seasonally April through October, Wednesdays through Sundays and Monday holidays; November and December, weekends. Gardens and picnicking. Site also features 8 km of cross country skiing.