
Well over a hundred national monuments across the United States and its territories have been established by different presidents under the authority of the Antiquities Act of 1906. Click on the numbers on the map for information about the national monuments.
1. Devils Tower
Wyoming

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 09/24/1906 | T. Roosevelt | 1,193.91 |
6. Cinder Cone
California

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 05/06/1907 | T. Roosevelt | 5,120 |
Incorporated into Lassen Volcanic NP | 08/09/1916 | 64th Congress |
7. Lassen Volcanic
California

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 05/06/1907 | T. Roosevelt | 1,280 |
Redesignated Lassen Volcanic NP | 08/09/1916 | 64th Congress |
10. Muir Woods
California

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 01/09/1908 | T. Roosevelt | 295 |
Enlarged | 09/22/1921 | W. Harding | 128.14 |
Enlarged | 04/05/1935 | F. Roosevelt | 1.36 |
Enlarged | 06/26/1951 | H. Truman | 504.271 |
Enlarged | 09/08/1959 | D. Eisenhower | 6.16 |
13. Pinnacles
California

Action | Date | President/ Congress | Acres Affected |
Established | 01/16/1908 | T. Roosevelt | 1,320 |
Enlarged | 05/07/1923 | W. Harding | 2,653.46 |
Enlarged | 07/02/1924 | C. Coolidge | 2,980.26 |
Enlarged | 07/11/1933 | F. Roosevelt | 4805 |
Enlarged | 12/05/1941 | F. Roosevelt | 4,589.26 |
Enlarged | 01/11/2000 | W. Clinton | 7,900 |
14. Jewel Cave
South Dakota

State | Date | President/ Congress | Acres Affected |
Established | 02/07/1908 | T. Roosevelt | 1,274.56 |
16. Lewis and Clark Cavern
Montana

Action | Date | President/ Congress | Acres Affected |
Established | 05/11/1908 | T. Roosevelt | 160 |
Boundaries Confirmed | 05/16/1911 | W. Taft | 160 |
Transferred to MT, now a state park | 08/24/1937 | 75th Congress |
19. Mount Olympus
Washington

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 03/02/1909 | T. Roosevelt | 639,200 |
Diminished | 04/17/1912 | W. Taft | 160 |
Diminished | 05/11/1915 | W. Wilson | 313,280 |
Diminished | 01/07/1929 | C. Coolidge | 640 |
Redesignated NP | 06/29/1938 | 75th Congress |
21. Oregon Caves
Oregon

Action | Date | President/ Congress | Acres Affected |
Established | 07/12/1909 | W. Taft | 465.80 |
24. Shoshone Cavern
Wyoming

Action | Date | President/ Congress | Acres Affected |
Established | 09/21/1909 | W. Taft | 210 |
Transferred to WY | 05/17/1954 | 83d Congress |
28. Big Hole Battlefield
Montana

Action | Date | President/ Congress | Acres Affected |
Established | 06/23/1910 | W. Taft | 5 |
Enlarged | 06/29/1939 | F. Roosevelt | 195 |
Redesignated NB | 05/17/1963 | 88th Congress |
30. Devil Postpile
California

Action | Date | President/ Congress | Acres Affected |
Established | 07/06/1911 | W. Taft | 798.46 |
31. Cabrillo
California

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 10/14/1913 | W. Wilson | 0.50 |
Enlarged | 02/02/1959 | D. Eisenhower | 80 |
Enlarged | 09/28/1974 | G. Ford | 56.6 |
36. Sieur de Monts
Maine

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 07/08/1916 | W. Wilson | 5,000 |
Redesignated Lafayette NP | 02/26/1919 | 65th Congress | |
Redesignated Acadia NP | 1930 |
39. Verendrye
North Dakota

Action | Date | President/ Congress | Acres Affected |
Established | 06/29/1917 | W. Wilson | 253.04 |
Transferred to ND | 07/30/1956 | 84th Congress |
42. Scotts Bluff
Nebraska

Action | Date | President/ Congress | Acres Affected |
Established | 12/12/1919 | W. Wilson | 2,053.83 |
Enlarged | 03/29/1940 | F. Roosevelt | 53.34 |
44. Lehman Caves
Nevada

Action | Date | President/ Congress | Acres Affected |
Established | 01/24/1922 | W. Harding | 593.03 |
Incorporated into Great Basin NP | 10/27/1986 | 99th Congress |
46. Fossil Cycad
South Dakota

Action | Date | President/ Congress | Acres Affected |
Established | 10/21/1922 | W. Harding | 320 |
Transferred to BLM | 08/01/1956 | 84th Congress |
49. Mound City Group
Ohio

Action | Date | President/ Congress | Acres Affected |
Established | 03/02/1923 | W. Harding | 57 |
Redesignated Hopewell Culture NHP | 05/27/1992 | 102d Congress |
54. Craters of the Moon
Idaho

Action | Date | President/ Congress | Acres Affected |
Established | 05/02/1924 | C. Coolidge | 22,651.8 |
Enlarged | 07/23/1928 | C. Coolidge | 26,240 |
Enlarged | 07/09/1930 | H. Hoover | |
Diminished | 07/18/1941 | F. Roosevelt | (R.O.W.) |
Enlarged | 11/19/1962 | J. Kennedy | 5360 |
Enlarged under BLM | 11/09/2000 | W. Clinton | 661,287 |
55. Fort Wood
New York

Action | Date | President/ Congress | Acres Affected |
Established | 10/15/1924 | C. Coolidge | 2.5 |
Enlarged | 09/07/1937 | F. Roosevelt | 7.88 |
Enlarged, redesignated Statue of Libery NM | 05/11/1965 | L. Johnson | 48 |
56. Castle Pinckney
South Carolina

Action | Date | President/ Congress | Acres Affected |
Established | 10/15/1924 | C. Coolidge | 3.5 |
Transferred to SC | 03/29/1956 | 84th Congress |
57. Fort Pulaski
Georgia

Action | Date | President/ Congress | Acres Affected |
Established | 10/15/1924 | C. Coolidge | 20 |
Enlarged | 08/14/1958 | D. Eisenhower | 2.5 |
58. Fort Marion
Florida

Action | Date | President/ Congress | Acres Affected |
Established | 10/15/1924 | C. Coolidge | 18.51 |
59. Fort Matanzas
Florida

Action | Date | President/ Congress | Acres Affected |
Established | 10/15/1924 | C. Coolidge | 1 |
Enlarged | 01/09/1935 | F. Roosevelt | 88 |
Enlarged | 03/24/1948 | H. Truman | 209.42 |
61. Meriwether Lewis
Tennessee

Action | Date | President/ Congress | Acres Affected |
Established | 02/06/1925 | C. Coolidge | 50 |
Enlarged | 12/06/1927 | C. Coolidge | 100 |
Included in the Natchez Trace Parkway, now Natchez Trace National Scenic Trail | 08/10/1961 |
63. Father Millet Cross
New York

Action | Date | President/ Congress | Acres Affected |
Established | 09/05/1925 | C. Coolidge | 0.0074 |
Transferred to NY | 09/07/1949 | 81st Congress | |
Now part of Old Fort Niagara State Park |
64. Lava Beds
California

Action | Date | President/ Congress | Acres Affected |
Established | 11/21/1925 | C. Coolidge | 45,589.92 |
Enlarged | 04/27/1951 | H. Truman | 211.13 |
70. Death Valley
Calfornia - Nevada

Action | Date | President/ Congress | Acres Affected |
Established | 02/11/1933 | H. Hoover | 848,581.36 |
Enlarged | 03/26/1937 | F. Roosevelt | 305,920 |
Enlarged | 01/17/1952 | H. Truman | 40 |
Redesignated NP | 10/04/1994 | 103d Congress |
74. Fort Jefferson
Florida

Action | Date | President/ Congress | Acres Affected |
Established | 01/04/1935 | F. Roosevelt | 47,125 |
Redesignated Dry Tortugas NP | 10/26/1992 | 102d Congress |
75. Joshua Tree
California

Action | Date | President/ Congress | Acres Affected |
Established | 08/10/1936 | F. Roosevelt | 825,340 |
Redesignated NP | 10/31/1994 | 103d Congress |
78. Channel Islands
California

Action | Date | President/ Congress | Acres Affected |
Established | 04/26/1938 | F. Roosevelt | 1,119.98 |
Enlarged | 02/09/1949 | H. Truman | 25,918.02 |
Redesignated NP | 05/31/1980 | 96th Congress |
79. Fort Laramie
Wyoming

Action | Date | President/ Congress | Acres Affected |
Established | 07/16/1938 | F. Roosevelt | 214.41 |
Redesignated NHS | 04/29/1960 | 86th Congress |
80. Santa Rosa Island
Florida

Action | Date | President/ Congress | Acres Affected |
Established | 05/17/1939 | F. Roosevelt | 9,500 |
Diminished | 08/13/1945 | H. Truman | 4,700 |
Incorporated into Gulf Islands NS | 07/30/1946 | 79th Congress |
82. Jackson Hole
Wyoming

Action | Date | President/ Congress | Acres Affected |
Established | 03/15/1943 | F. Roosevelt | 210,950 |
Redesignated Grand Teton NP | 09/14/1950 | Slat 81st Congress |
83. Effigy Mounds
Iowa

Action | Date | President/ Congress | Acres Affected |
Established | 10/25/1949 | H. Truman | 1,000 |
84. Edison Laboratory
New Jersey

Action | Date | President/ Congress | Acres Affected |
Established | 07/14/1956 | D. Eisenhower | 1.51 |
Redesignated Edison NHS | 09/05/1962 | 87th Congress |
85. Chesapeake & Ohio Canal
Maryland

Action | Date | President/ Congress | Acres Affected |
Established | 01/18/1961 | D. Eisenhower | 5,263.94 |
Redesignated NHP | 01/08/1971 | 91st Congress |
86. Russell Cave
Alabama

Action | Date | President/ Congress | Acres Affected |
Established | 05/11/1961 | J. Kennedy | 310.45 |
106. California Coastal
California

Action | Date | President/ Congress | Acres Affected |
Established | 01/11/2000 | W. Clinton | 883 |
108. Giant Sequoia
California

Action | Date | President/ Congress | Acres Affected |
Established, incorporated into Sequioa National Forest | 04/15/2000 | W. Clinton | 327,769 |
110. Cascade-Siskiyou
Oregon

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 06/09/2000 | W. Clinton | 52,000 |
111. Hanford Reach
Washington

Action | Date | President/ Congress | Acres Affected |
Established | 06/09/2000 | W. Clinton | 195,000 |
113.
President Lincoln and
Soldiers' Home
Washington, D.C.

Action | Date | President/ Congress | Acres Affected |
Established | 07/07/2000 | W. Clinton | 2.3 |
115. Carrizo Plain
California

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 01/17/2001 | W. Clinton | 204,107 |
117. Minidoka Internment
Idaho

Action | Date | President/ Congress | Acres Affected |
Established | 01/17/2001 | W. Clinton | 72.75 |
118. Pompeys Pillar
Montana

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 01/17/2001 | W. Clinton | 51 |
120. Upper Missouri River Breaks
Montana

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 01/17/2001 | W. Clinton | 377,346 |
122. Governors Island
New York

Action | Date | President/ Congress | Acres Affected |
Authorized | 01/19/2001 | W. Clinton | 20 |
Established | 02/07/2003 |
123. African Burial Ground
New York

view profile >>
Action | Date | President/ Congress | Acres Affected |
Established | 02/27/2006 | G. W. Bush | 0.345 |
129. Fort Monroe
Virginia

Action | Date | President/ Congress | Acres Affected |
Established | 11/01/2011 | B. H. Obama | 325.21 |
130. Fort Ord
California

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 04/20/2012 | B. H. Obama | 14,651 |
132. Cesar Chavez
California

Action | Date | President/ Congress | Acres Affected |
Established | 10/08/2012 | B. H. Obama | 10.5 |
133. San Juan Islands
Washington

Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 03/25/2013 | B. H. Obama | 970 |
135. Harriet Tubman Underground Railroad
Maryland

Action | Date | President/ Congress | Acres Affected |
Established (NPS and FWS) | 03/25/2013 | B. H. Obama | 11,750 |
136. First State
Delaware

Action | Date | President/ Congress | Acres Affected |
Established | 03/25/2013 | B. H. Obama | 1,108 |
137. Charles Young Buffalo Soldiers
Ohio

Action | Date | President/ Congress | Acres Affected |
Established | 03/25/2013 | B. H. Obama | 59.65 |