Remembering the Manhattan Project provides readers insight into the Manhattan Project, one of the most significant undertakings of the 20th century, its legacy and lessons for meeting today’s challenges. Each of the papers from the Atomic Heritage Foundation’s Symposium on the Manhattan Project in Part I provides a different perspective on what made the Manhattan Project succeed in doing in just 27 months what every other leading nation in World War II concluded was impossible. Part II provides a plan for preserving some of the original Manhattan Project structures and other aspects of this history for the public and future generations. Most of these properties have not been accessible to the public and in recent years have been stripped of their equipment and slated for demolition. Part II proposes a strategy for preserving significant Manhattan Project properties, first-of-a-kind equipment, artifacts, and other tangible remnants of this remarkable undertaking.