Located in Park County, Wyoming, just outside of the town of Cody, near Yellowstone. Opened August 11, 1942, as the Heart Mountain War Relocation Center. At its peak, Heart Mountain held around 10,767 incarcerees, mainly coming from Los Angeles, Santa Clara, and San Francisco, California and Yakima and Washington counties in Washington. Over 1,000 Nisei from Heart Mountain would serve in the armed forces. Heart Mountain would finally close on November 10, 1945.