Unionville Vineyard is a winery in the Unionville section of East Amwell in Hunterdon County, New Jersey. Originally part of the largest peach orchard in the United States, the vineyard was first planted in 1988, and opened to the public in 1993. Unionville has 41 acres of grapes under cultivation, and produces 4,500 cases of wine per year. The winery is named for a former village near where the farm is located.