Established: November 10, 1978
Annual Visitors: 753,880 (2016)
Official Site: https://www.nps.gov/thro/index.htm
Following Theodore Roosevelt's death in 1919, the Little Missouri Badlands were explored to determine possible park sites. Civilian Conservation Corps camps were established in both of the future park units from 1934 to 1941, and they developed roads and other structures in use today. The area was designated the Roosevelt Recreation Demonstration Area in 1935. In 1946 it was transferred to the United States Fish and Wildlife Service as the Theodore Roosevelt National Wildlife Refuge. President Truman established the Theodore Roosevelt National Memorial Park on April 25, 1947, the only National Memorial Park ever established. In 1978, in addition to boundary adjustments and the establishment of 29,920 acres (121.1 km2) of the Theodore Roosevelt Wilderness, the park's designation was changed to Theodore Roosevelt National Park.