Chief Plenty Coups State Park is a state park located approximately 0.5 miles (0.8 km) west of Pryor, Montana, on the Crow Indian Reservation. Chief Plenty Coups' (Alek-Chea-Ahoosh) Home, located in the state park, is a National Historic Landmark with several contributing resources. The homestead was listed on the U.S. National Register of Historic Places in 1970 and became a National Historic Landmark in 1999. The 195-acre (79 ha) property belonged to Chief Plenty Coups, the last traditional tribal Chief of the Apsáalooke people.