Little Bighorn Battlefield National Monument is located in Montana and commemorates the site of the Battle of the Little Bighorn, which took place on June 25-26, 1876. This battle was fought between the United States Army, led by General George Custer, and a coalition of Native American tribes, including the Lakota Sioux and Cheyenne. The monument preserves the landscape and honors those who fought in the battle. The site features a visitor center, walking trails, and various monuments, including the Custer National Cemetery. Visitors can learn about the history of the battle, the cultures involved, and the ongoing significance of the events that transpired there.