The High Line is a public park built on a 1.45-mile-long elevated rail structure running from Gansevoort Street to West 34th Street on Manhattan's West Side. The High Line used to be a freight rail line, in operation from 1934 to 1980. It carried meat to the meatpacking district, agricultural goods to the factories and warehouses of the industrial West Side, and mail to the Post Office.

The High Line design is a collaboration between James Corner Field Operations (Project Lead), Diller Scofidio + Renfro, and planting designer Piet Oudolf.