Okmulgee National Monument is located in Okmulgee, Oklahoma and preserves the historical and cultural heritage of the Muskogee (Creek) Nation. The site features ancient earthen mounds built by Native Americans, which were used for ceremonial and residential purposes. Visitors can explore the park's trails and view the mounds, as well as learn about the area's rich history through interpretive signs and a visitor center. The monument serves as a reminder of the significance of the Creek people and their contributions to the region's history.