Fort Klock, a fortified stone homestead in the Mohawk River Valley of Upstate New York, was built c.1750 by Johannes Klock, and is a good example of a mid-18th century fortified home and trading post, seeing use during the French and Indian War and the American Revolutionary War The fort is located at 7203 Route 5 roughly two miles (3 km) east of the Village of St. Johnsville, New York. Fort Klock is part of a 30-acre (12 ha) complex that includes the historic homestead, a renovated Colonial Dutch Barn, blacksmith shop, and 19th-century schoolhouse. The site is maintained by Fort Klock Historic Restoration and is open seasonally as a living museum. The fort was declared a National Historic Landmark in 1972.