National Historic Landmark

A National Historic Landmark (NHL) is a designation given by the U.S. federal government to places, buildings, or objects that have exceptional historical significance. These sites are recognized for their cultural, architectural, or archaeological importance, helping to preserve the nation’s heritage. Unlike National Historic Sites, which are managed by the National Park Service, NHLs can be privately owned or managed by various organizations. The designation highlights their value and encourages preservation, allowing future generations to learn about and appreciate America’s diverse history.