There is one National Historic Landmark in the Planning Area  the Heart Mountain Relocation Center National Historic Landmark.

The Heart Mountain Relocation Center is a National Historic Landmark designated by the Secretary of the Interior under 36 CFR 65.5. From 1942 through 1945, 14,000 Japanese-Americans passed through the Heart Mountain Relocation Center. At its peak population of approximately 11,000 (two-thirds of whom were American citizens), Heart Mountain was the state’s third largest community. The center was built to house some of the 110,000 persons evacuated from the West Coast following the Japanese attack on Pearl Harbor in December 1941. The Heart Mountain Relocation Center is a reminder of a unique episode in American history and is relevant to the military, social, and political history of the Nation (Heart Mountain Wyoming Foundation 2009; NPS 2009).