List of U.S. National Monuments
| Site Name | Size (sq.miles) | State | Founded |
|---|---|---|---|
| (Fort Moultrie)* | .01 | South Carolina | 1960 |
| Admiralty Island | 1,529.49 | Alaska | 1978 |
| African Burial Ground | .00 | New York | 1992 |
| Agate Fossil Beds | 4.78 | Nebraska | 1965 |
| Agua Fria | 113.04 | Arizona | 2000 |
| Alibates Flint Quarries | 2.14 | Texas | 1965 |
| Aniakchak | 214.34 | Alaska | 1978 |
| Aztec Ruins | .50 | New Mexico | 1923 |
| Bandelier | 52.62 | New Mexico | 1916 |
| Booker T. Washington | .37 | Virginia | 1956 |