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Antiquities Act 1906-2006 [link to homepage] Visit the National Monuments [title]

Well over a hundred national monuments across the United States have been established national monuments by many different presidents. Each monument is numbered according to the sequence in which it was established since 1906. Click on a number and learn about the national monument and its history.

Devils Tower

Wyoming

Action Date President/ Congress Acres Affected
Established 09/24/1906 T. Roosevelt 1,193.91
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Cinder Cone

California

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

California

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

California

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
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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
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Jewel Cave

South Dakota

State Date President/ Congress Acres Affected
Established 02/07/1908 T. Roosevelt 1,274.56
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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  
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Mount Olympus

Washington

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  
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Oregon Caves

Oregon

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

Wyoming

Action Date President/ Congress Acres Affected
Established 09/21/1909 W. Taft 210
Transferred to WY 05/17/1954 83d Congress  
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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  
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Devil Postpile

California

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

California

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
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Sieur de Monts

Maine

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    
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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  
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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
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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  
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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  
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Mound City Group

Ohio

Action Date President/ Congress Acres Affected
Established 08/09/1921 W. Harding 57
Redesignated Hopewell Culture NHP 05/27/1992 102d Congress  
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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
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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
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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  
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Fort Pulaski

Georgia

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

Florida

Action Date President/ Congress Acres Affected
Established 10/15/1924 C. Coolidge 18.51
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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
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Meriwether Lewis

Tennessee

Action Date President/ Congress Acres Affected
Established 02/06/1925 C. Coolidge 50
Enlarged 12/06/1927 C. Coolidge 100
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Fort Niagra

New York

Action Date President/ Congress Acres Affected
Established 09/05/1925 C. Coolidge 0.0074
Transferred to NY 09/07/1949 81st Congress  
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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
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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  
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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  
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Joshua Tree

California

Action Date President/ Congress Acres Affected
Established 08/10/1936 F. Roosevelt 825,340
Redesignated NP 10/31/1994 103d Congress  
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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  
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Fort Laramie

Wyoming

Action Date President/ Congress Acres Affected
Established 07/16/1938 F. Roosevelt 214.41
Redesignated NHS 04/29/1960 86th Congress  
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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 Channel Islands NP 07/30/1946 79th Congress  
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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  
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Effigy Mounds

Iowa

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

New Jersey

Action Date President/ Congress Acres Affected
Established 07/14/1956 D. Eisenhower 1.51
Redesignated NHS 09/05/1962 87th Congress  
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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  
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Russell Cave

Alabama

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

California

Action Date President/ Congress Acres Affected
Established 01/11/2000 W. Clinton (no estimate)
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Giant Sequoia

California

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

Oregon

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

Washington

Action Date President/ Congress Acres Affected
Established 06/09/2000 W. Clinton 195,000
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President Lincoln and
Soldier's Home

Washington, D.C.

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

California

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

Idaho

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

Montana

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

Missouri

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

New York

Action Date President/ Congress Acres Affected
Established 01/19/2001 W. Clinton 20
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