The High Line in Manhattan was an abandoned elevated railway that was reused as an urban renewal project. Built in the 1930s, it fell into disuse by the 1980s. In the 2000s, Friends of the High Line advocated to preserve and reuse the structure as a public park. The project transformed the area, increasing property values and catalyzing new development. It proved successful by using various funding mechanisms and zoning incentives to develop in stages while protecting the rail infrastructure under federal rail banking policies.