Nationwide, redevelopment and housing authorities have built 75 parks on the former sites of factories, homes, office buildings, railyards, parking lots, landfills, and even highways. Based on a 2008 survey by Trust for Public Land's (TPL) Center for City Park Excellence, "When There's Nothing to Conserve, Create!" was recently published in the Journal of Housing and Community Development and is now available for download. File attached.