At Fort Smith National Historic Site you can walk where soldiers drilled, pause along the Trail of Tears, and stand where justice was served. The park includes the remains of two frontier forts and the Federal Court for the Western District of Arkansas. Exhibits in the visitor center focus on Fort Smith’s military history from 1817 – 1871, western expansion, Judge Isaac C. Parker and the federal court’s impact on Indian Territory, U.S. Deputy Marshals and outlaws, Federal Indian policy, and Indian Removal including the Trail of Tears. Located on the grounds are the foundation remains of the first Fort Smith (1817-1824), the Commissary building (c. 1838) and a reconstruction of the gallows used by the federal court. A walking trail along the Arkansas River includes wayside exhibits on the Trail of Tears.

Oklahoma City National Memorial honors the victims, survivors, rescuers, and all who were changed forever on April 19, 1995. Located on 3.3 acres, the outdoor Symbolic Memorial consists of the Gates of Time entrance gates, Reflecting Pool, Children's Area, Rescuers' Orchard, the "Survivor Tree," and the Memorial Fence.

Washita Battlefield National Historic Site protects and interprets the site of the Southern Cheyenne village of Peace Chief Black Kettle that was attacked by the 7th U.S. Cavalry under Lt. Col. George A. Custer just before dawn on November 27, 1868. The controversial strike was hailed at the time by the military and many civilians as a significant victory aimed at reducing Indian raids on frontier settlements. Washita remains controversial because many Indians and whites labeled Custer's attack a massacre. Black Kettle is still honored as a prominent leader who never ceased striving for peace even though it cost him his life.