The Colden Mansion Ruins are located in the Town of Montgomery, New York, United States, along NY 17K, at the intersection of Stone Castle Road and Route 17K. The stone walls and foundations, still visible in the woods just off the road, are all that still stands from the house built in 1767 by Cadwallader Colden Jr., son of Cadwallader Colden. The entire area, once the 3,000-acre (12 km²) family farm, is still known as Coldenham and East Coldenham, and the Colden Family Cemetery is approximately a mile (1.6 km) to the southwest.