Well over a hundred national monuments across the United States have been established by different presidents under the authority of the Antiquities Act of 1906. Each monument on the map above is numbered according to the sequence in which it was established. Click on the numbers to learn about national monuments and their histories, and to find links to the monuments� home pages.
Find out how to visit a national monument from its homepage, or go to the National Park Service's Parks and Recreation page and the Bureau of Land Management's Adventures in the Past page.
2. El Morro
New Mexico
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Action | Date | President/ Congress | Acres Affected |
Established | 12/08/1906 | T. Roosevelt | 160 |
Enlarged | 06/18/1917 | W. Wilson | 240 |
3. Montezuma Castle
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 12/08/1906 | T. Roosevelt | 161.39 |
Enlarged | 02/23/1937 | F. Roosevelt | 360 |
4. Petrified Forest
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 12/08/1906 | T. Roosevelt | 60,776.02 |
Diminished | 07/31/1911 | W. Taft | 25,625.60 |
Enlarged | 11/14/1930 | H. Hoover | 11,010 |
Redesignated NP | 03/28/1958 | 85th Congress |
5. Chaco Canyon
New Mexico
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Action | Date | President/ Congress | Acres Affected |
Established | 03/11/1907 | T. Roosevelt | 10,643.13 |
Enlarged | 01/10/1928 | C. Coolidge | 21,509.40 |
Redesignated Chaco Culture NHP | 12/19/1980 | 96th Congress |
8. Gila Cliff Dwellings
New Mexico
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Action | Date | President/ Congress | Acres Affected |
Established | 11/16/1907 | T. Roosevelt | 160 |
Enlarged | 04/17/1962 | J. Kennedy | 373.25 |
9. Tonto
Arizona
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State | Date | President/ Congress | Acres Affected |
Established | 12/19/1907 | T. Roosevelt | 640 |
Enlarged | 04/01/1937 | F. Roosevelt | 480 |
11. Grand Canyon
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 01/11/1908 | T. Roosevelt | 808,120 |
Redesignated Grand Canyon NP | 02/26/1919 | 65th Congress |
12. Grand Canyon "II"
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 12/22/1932 | H. Hoover | 273,145 |
Diminished | 04/04/1940 | F. Roosevelt | 71,854 |
Redesignated Grand Canyon NP | 01/03/1975 | 93d Congress |
15. Natural Bridges
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 04/16/1908 | T. Roosevelt | 120 |
Enlarged | 09/25/1909 | W. Taft | 2,620 |
Boundaries Confirmed | 02/11/1916 | W. Wilson | n/a |
Enlarged | 08/14/1962 | J. Kennedy | 5,236 |
Diminished | 320 |
17. Tumacacori
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 09/15/1908 | T. Roosevelt | 10 |
Enlarged | 03/28/1958 | D. Eisenhower | 0.15 |
Redesignated NHP | 08/06/1990 | 101st Congress |
18. Wheeler
Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 12/07/1908 | T. Roosevelt | 300 |
Transferred to BLM, part of Rio Grande National Forest | 08/03/1950 | 81st Congress |
20. Navajo
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 03/20/1909 | W. Taft | 360 |
Diminished | 03/14/1912 | W. Taft | 320 |
22. Mukuntu-weap/Zion
Utah
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Action | Date | President/ Congress | Acres Affected |
Established | 07/31/1909 | W. Taft | 16,000 |
Enlarged & Renamed | 03/18/1918 | W. Wilson | 76,800 |
Re-designated NP | 11/19/1919 | 66th Congress |
23. Zion "II" (Kolob Section)
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 01/22/1937 | F. Roosevelt | 49,150 |
Redesignated NP | 07/11/1956 | 84th Congress |
25. Gran Quivira
New Mexico
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Action | Date | President/ Congress | Acres Affected |
Established | 11/01/1909 | W. Taft | 160 |
Enlarged | 11/25/1919 | W. Wilson | 240 |
Abolished, funds available to Salinas NM | 12/19/1980 | 96th Congress | |
Redesignated Salinas Pueblo Missions NM | 10/28/1988 |
27. Rainbow Bridge
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 05/30/1910 | W. Taft | 160 |
29. Colorado
Colorado
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Action | Date | President/ Congress | Acres Affected |
Established | 05/24/1911 | W. Taft | 13,466.21 |
Diminished | 08/07/1959 | D. Eisenhower | 211 |
Enlarged | 120 |
32. Papago Saguaro
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 01/31/1914 | W. Wilson | 2,050.43 |
Transferred to AZ, now Papago Park | 04/07/1930 | 71st Congress |
33. Dinosaur
Utah - Colorado
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Action | Date | President/ Congress | Acres Affected |
Established | 10/04/1915 | W. Wilson | 80 |
Enlarged | 07/14/1938 | F. Roosevelt | 203,885 |
34. Walnut Canyon
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 11/30/1915 | W. Wilson | 960 |
35. Bandelier
New Mexico
Action | Date | President/ Congress | Acres Affected |
Established | 02/11/1916 | W. Wilson | 23,352 |
Enlarged | 01/09/1961 | D. Eisenhower | 3,600 |
Enlarged | 05/27/1963 | J. Kennedy | 2,882 |
Diminished | 3,925 |
37. Capulin Mountain
New Mexico
Action | Date | President/ Congress | Acres Affected |
Established | 08/09/1916 | W. Wilson | 640.42 |
40. Casa Grande
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 08/03/1918 | W. Wilson | 480 |
43. Yucca House
Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 12/19/1919 | W. Wilson | 9.60 |
45. Timpanogos Cave
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 10/14/1922 | W. Harding | 250 |
Boundaries Confirmed | 03/27/1962 | J. Kennedy | n/a |
47. Aztec Ruin
New Mexico
Action | Date | President/ Congress | Acres Affected |
Established | 01/24/1923 | W. Harding | 4.6 |
Enlarged | 07/02/1928 | C. Coolidge | 12.6 |
Enlarged | 12/19/1930 | H. Hoover | 6.8788 |
Enlarged | 05/27/1948 | H. Truman | 1.255 |
48. Hovenweep
Utah - Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 03/02/1923 | W. Harding | 285.80 |
Enlarged | 04/26/1951 | H. Truman | 80+ |
Enlarged | 11/20/1952 | H. Truman | 81.02 |
Diminished | 04/06/1956 | D. Eisenhower | 40 |
Enlarged, administered by Canyonlands NP | 40+ |
50. Pipe Springs
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 05/31/1923 | W. Harding | 40 |
51. Bryce Canyon
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 06/08/1923 | W. Harding | 7,440 |
Redesignated NP | 06/07/1924 | 68th Congress |
52. Carlsbad Cave
New Mexico
Action | Date | President/ Congress | Acres Affected |
Established | 10/25/1923 | C. Coolidge | 719.22 |
Redesignated NP | 05/14/1930 | 71st Congress |
53. Chiricahua
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 04/18/1924 | C. Coolidge | 3,655.12 |
Enlarged | 06/10/1938 | F. Roosevelt | 6,407 |
60. Wupatki
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 12/09/1924 | C. Coolidge | 2,234.1 |
Enlarged | 07/09/1937 | F. Roosevelt | 33,631.2 |
Diminished | 01/22/1941 | F. Roosevelt | 52.27 |
65. Arches
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 04/12/1929 | H. Hoover | 4,520 |
Enlarged | 11/25/1938 | F. Roosevelt | 29,160 |
Enlarged | 07/22/1960 | D. Eisenhower | 480 |
Enlarged | 01/20/1969 | L. Johnson | 48,943 |
Redesignated NP | 11/12/1971 | 92d Congress |
66. Holy Cross
Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 05/11/1929 | H. Hoover | 1,392 |
Redesignated under Forest Service | 08/03/1950 | 81st Congress |
67. Sunset Crater
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 05/26/1930 | H. Hoover | 3,040 |
Renamed Sunset Crater Volcano NM | 11/16/1990 |
68. Great Sand Dunes
Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 03/17/1932 | H. Hoover | 35,528.36 |
Resurveyed & Modified | 03/12/1946 | H. Truman | n/a |
Enlarged | 06/07/1956 | D. Eisenhower | 960 |
Diminished | 9880 | ||
Renamed National Park & Preserve | 11/22/2000 |
69. White Sands
New Mexico
Action | Date | President/ Congress | Acres Affected | Established | 01/18/1933 | H. Hoover | 131,486.84 |
Enlarged | 11/28/1934 | F. Roosevelt | 158.91 |
Land excluded | 08/29/1938 | F. Roosevelt | (R.O.W.) |
Enlarged | 06/6/1942 | D. Eisenhower | 478.53 |
71. Saguaro
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 03/01/1933 | H. Hoover | 53,510.08 |
Enlarged | 11/15/1961 | J. Kennedy | 15,360 |
Redesignated NP | 10/14/1994 | 103d Congress |
72. Black Canyon of the Gunnison
Colorado
Action | Date | President/ Congress | Acres Affected |
Established | 03/02/1933 | H. Hoover | 10,287.95 |
Enlarged | 05/16/1938 | F. Roosevelt | 100 |
Enlarged | 10/28/1939 | F. Roosevelt | 2,760 |
Lands excluded | 04/08/1960 | D. Eisenhower | 470 |
Enlarged | 06/13/1984 | ||
Renamed National Park | 10/21/1999 |
73. Cedar Breaks
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 08/22/1933 | F. Roosevelt | 5,701.39 |
76. Organ Pipe Cactus
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 04/13/1937 | F. Roosevelt | 330,690 |
77. Capitol Reef
Utah
Action | Date | President/ Congress | Acres Affected |
Established | 08/02/1937 | F. Roosevelt | 37,060 |
Enlarged | 07/02/1958 | D. Eisenhower | 3,040 |
Enlarged | 01/20/1969 | L. Johnson | 215,056 |
Redesignated NP | 12/18/1971 | 92d Congress |
81. Tuzigoot
Arizona
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Action | Date | President/ Congress | Acres Affected |
Established | 07/25/1939 | F. Roosevelt | 42.67 |
88. Marble Canyon
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 01/20/1969 | L. Johnson | 32,546.69 |
Incorporated into Grand Canyon NP | 01/03/1975 | 93d Congress |
104. Grand Staircase-Escalante
Utah
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 09/18/1996 | W. Clinton | 1,700,000 |
105. Agua Fria
Arizona
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 01/11/2000 | W. Clinton | 71,100 |
107. Grand Canyon-Parashant
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 01/11/2000 | W. Clinton | 1,014,000 |
109. Canyons of the Ancients
Colorado
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 06/09/2000 | W. Clinton | 164,000 |
112. Ironwood Forest
Arizona
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 06/09/2000 | W. Clinton | 128,917 |
114. Vermillion Cliffs
Arizona
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 11/09/2000 | W. Clinton | 293,000 |
116. Kasha-Katuwe Tent Rocks
New Mexico
Action | Date | President/ Congress | Acres Affected |
Established (BLM) | 01/17/2001 | W. Clinton | 4,148 |
119. Sonoran Desert
Arizona
Action | Date | President/ Congress | Acres Affected |
Established | 01/17/2001 | W. Clinton | 486,149 |