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.

2. El Morro

New Mexico

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	12/08/1906	T. Roosevelt	160
Enlarged	06/18/1917	W. Wilson	240

3. Montezuma Castle

Arizona

view profile >>

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

view profile >>

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

view profile >>

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

(NPS Photo) Archeologist records data at cliff dwelling site

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	11/16/1907	T. Roosevelt	160
Enlarged	04/17/1962	J. Kennedy	373.25

9. Tonto

Arizona

view profile >>

State	Date	President/ Congress	Acres Affected
Established	12/19/1907	T. Roosevelt	640
Enlarged	04/01/1937	F. Roosevelt	480

11. Grand Canyon

Arizona

view profile >>

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

view profile >>

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

(NPS Photo) View of natural stone bridge

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	08/14/1962	J. Kennedy	320

17. Tumacacori

Arizona

(NPS Photo) Tumacacori Mission buildings

view profile >>

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

(NPS Photo) Banded rock tower formations

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

(NPS Photo) Several stone cliff dwellings

view profile >>

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

view profile >>

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

(NPS Photo) Prickley pear cactus at foot of cliff

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

(NPS Photo) Snow-covered remains of stone building complex

view profile >>

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

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	05/24/1911	W. Taft	13,466.21
Diminished	08/07/1959	D. Eisenhower	211
Enlarged	08/07/1959	D. Eisenhower	120

32. Papago Saguaro

Arizona

(Photo, � City of Phoenix) Hole in the Rock, a lumpy sandstone formation

view profile >>

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

(NPS Photo) Fossilized dinosaur head from museum collection

view profile >>

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

(NPS Photo) Aerial view of walnut-shaped canyon

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	11/30/1915	W. Wilson	960

35. Bandelier

New Mexico

(NPS Photo) Cultural resources specialist climbs through roof access on cliff dwelling

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	05/27/1963	J. Kennedy	3,925

37. Capulin Mountain

New Mexico

(NPS Photo) Aerial view of Capulin volcanic cone

Action	Date	President/ Congress	Acres Affected
Established	08/09/1916	W. Wilson	640.42

40. Casa Grande

Arizona

(NPS Photo) Visitors near protected remains of Casa Grande

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	08/03/1918	W. Wilson	480

43. Yucca House

Colorado

(NPS Photo) Stone wall remains of Yucca House

Action	Date	President/ Congress	Acres Affected
Established	12/19/1919	W. Wilson	9.60

45. Timpanogos Cave

Utah

(NPS Photo) Delicate mineral formations in cave

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

(NPS Photo) Remaining stone walls at Aztec

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	04/06/1956	D. Eisenhower	40+

50. Pipe Springs

Arizona

(USGS Photo) Fort buildings at Pipe Spring

Action	Date	President/ Congress	Acres Affected
Established	05/31/1923	W. Harding	40

51. Bryce Canyon

Utah

(NPS Photo) Stone hoodoos at Bryce Canyon

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

(NPS Photo) Large mineral formations in caves

Action	Date	President/ Congress	Acres Affected
Established	10/25/1923	C. Coolidge	719.22
Redesignated NP	05/14/1930	71st Congress

53. Chiricahua

Arizona

(NPS Photo) Huge balancing rock at Chiricahua

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

(NPS Photo) Double stone bridges at Arches

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

(NPS Photo) Huge sand dunes at foot of Rocky Mountains

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	06/07/1956	D. Eisenhower	9880
Renamed National Park & Preserve	11/22/2000

69. White Sands

New Mexico

(NPS Photo) Yuccas grow on brilliant white dunes

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

(NPS Photo) Tall, deep-colored canyon walls

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

(NPS Photo) Sunset backlights organ pipe cacti

Action	Date	President/ Congress	Acres Affected
Established	04/13/1937	F. Roosevelt	330,690

77. Capitol Reef

Utah

(NPS Photo) Tectonic upheaval leaves colorful, broken landscape

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

view profile >>

Action	Date	President/ Congress	Acres Affected
Established	07/25/1939	F. Roosevelt	42.67

88. Marble Canyon

Arizona

(NPS Photo) Cliff house looks out to colorful canyon walls

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

(NPS Photo) Hoodoos congregate atop a hill

Action	Date	President/ Congress	Acres Affected
Established (BLM)	09/18/1996	W. Clinton	1,700,000

105. Agua Fria

Arizona

(NPS Photo) Cold mountain drainage feeds lush river flat

Action	Date	President/ Congress	Acres Affected
Established (BLM)	01/11/2000	W. Clinton	71,100

107. Grand Canyon-Parashant

Arizona

(BLM Photo) Stone ruins amid the desert grasses

Action	Date	President/ Congress	Acres Affected
Established	01/11/2000	W. Clinton	1,014,000

109. Canyons of the Ancients

Colorado

(NPS Photo) Round stone tower glows in the sun

Action	Date	President/ Congress	Acres Affected
Established (BLM)	06/09/2000	W. Clinton	164,000

112. Ironwood Forest

Arizona

(BLM Photo) Cacti, grasses, and shrubs create lush desert landscape

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

(NPS Photo) Colorful stone towers worn in circus-tent shapes

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

131. Chimney Rock

Colorado

Action	Date	President/ Congress	Acres Affected
Established (USFS)	09/21/2012	B. H. Obama	4,726

134. Rio Grande del Norte

New Mexico

Action	Date	President/ Congress	Acres Affected
Established (BLM)	03/25/2013	B. H. Obama	242,555

138. Organ Mountains-Desert Peaks

New Mexico

Action	Date	President/ Congress	Acres Affected
Established (BLM)	05/21/2014	B. H. Obama	496,330