America's 11 Most Endangered Places or America's 11 Most Endangered Historic Places is a list of places in the United States that the National Trust for Historic Preservation considers the most endangered. It aims to inspire Americans to preserve examples of architectural and cultural heritage that could be "relegated to the dustbins of history" without intervention. First released in 1987, the number of sites included on the list has varied, with the most recent lists settling on 11.