US National Monuments

US National Monuments

In 1906, Roosevelt signed the Act for the Preservation of American Antiquities, giving the president the power to officially declare natural and historic sites situated on government land as national monuments.

As of 2013, there are 108 U.S. National Monuments, of which 80 are administered by the NPS and are listed below. The remaining 28 monuments are administered by 5 other federal agencies.  

Name Location Area
African Burial Ground National Monument New York 69993500000000000000.35 acres (0.0014 km2)
Agate Fossil Beds National Monument Nebraska 70033057870000000003,057.87 acres (12.3748 km2)
Alibates Flint Quarries National Monument Texas 70031370970000000001,370.97 acres (5.5481 km2)
Aniakchak National Monument and Preserve Alaska 7005137176000000000137,176 acres (555.13 km2)
Aztec Ruins National Monument New Mexico 7002318400000000000318.4 acres (1.289 km2)
Bandelier National Monument New Mexico 700433676670000000033,676.67 acres (136.2846 km2)
Booker T. Washington National Monument Virginia 7002239010000000000239.01 acres (0.9672 km2)
Buck Island Reef National Monument U.S. Virgin Islands 700419015470000000019,015.47 acres (76.9529 km2)
Cabrillo National Monument California 7002159940000000000159.94 acres (0.6473 km2)
Canyon de Chelly National Monument Arizona 700483840000000000083,840 acres (339.3 km2)
Cape Krusenstern National Monument and Archeological District Alaska 7005649124530000000649,124.53 acres (2,626.9138 km2)
Capulin Volcano National Monument New Mexico 7002792840000000000792.84 acres (3.2085 km2)
Casa Grande Ruins National Monument Arizona 7002472500000000000472.5 acres (1.912 km2)
Castillo de San Marcos National Monument Florida 700119380000000000019.38 acres (0.0784 km2)
Castle Clinton National Monument New York 70001000000000000001 acre (0.0040 km2)
Cedar Breaks National Monument Utah 70036154600000000006,154.6 acres (24.907 km2)
César E. Chávez National Monument California 7002116560000000000116.56 acres (0.4717 km2)
Charles Young Buffalo Soldiers National Monument Ohio 700159660000000000059.66 acres (0.2414 km2)
Chiricahua National Monument Arizona 700411984730000000011,984.73 acres (48.5005 km2)
Colorado National Monument Colorado 700420536390000000020,536.39 acres (83.1078 km2)
Craters of the Moon National Monument and Preserve Idaho 700453571050000000053,571.05 acres (216.7943 km2)
Devils Postpile National Monument California 7002798460000000000798.46 acres (3.2313 km2)
Devils Tower National Monument Wyoming 70031346910000000001,346.91 acres (5.4508 km2)
Dinosaur National Monument Utah / Colorado 7005210283310000000210,283.31 acres (850.9864 km2)
Effigy Mounds National Monument Iowa 70032526390000000002,526.39 acres (10.2239 km2)
El Malpais National Monument New Mexico 7005114313870000000114,313.87 acres (462.6118 km2)
El Morro National Monument New Mexico 70031278720000000001,278.72 acres (5.1748 km2)
First State National Monument Delaware / Pennsylvania 70031151060000000001,151.06 acres (4.6582 km2)
Florissant Fossil Beds National Monument Colorado 70035998090000000005,998.09 acres (24.2734 km2)
Fort Frederica National Monument Georgia 7002284490000000000284.49 acres (1.1513 km2)
Fort Matanzas National Monument Florida 7002300110000000000300.11 acres (1.2145 km2)
Fort McHenry National Monument and Historic Shrine Maryland 700143260000000000043.26 acres (0.1751 km2)
Fort Monroe National Monument Virginia 7002325200000000000325.2 acres (1.316 km2)
Fort Pulaski National Monument Georgia 70035623100000000005,623.1 acres (22.756 km2)
Fort Stanwix National Monument New York 700115520000000000015.52 acres (0.0628 km2)
Fort Sumter National Monument South Carolina 7002234740000000000234.74 acres (0.9500 km2)
Fort Union National Monument New Mexico 7002720600000000000720.6 acres (2.916 km2)
Fossil Butte National Monument Wyoming 70038198000000000008,198 acres (33.18 km2)
George Washington Birthplace National Monument Virginia 7002661730000000000661.73 acres (2.6779 km2)
George Washington Carver National Monument Missouri 7002210000000000000210 acres (0.85 km2)
Gila Cliff Dwellings National Monument New Mexico 7002533130000000000533.13 acres (2.1575 km2)
Governors Island National Monument New York 700122780000000000022.78 acres (0.0922 km2)
Grand Canyon-Parashant National Monument Arizona
Grand Portage National Monument Minnesota 7002709970000000000709.97 acres (2.8731 km2)
Hagerman Fossil Beds National Monument Idaho 70034351149999999994,351.15 acres (17.6085 km2)
Harriet Tubman Underground Railroad National Monument Maryland 7002480000000000000480 acres (1.9 km2)
Hohokam Pima National Monument Arizona 70031690000000000001,690 acres (6.8 km2)
Homestead National Monument of America Nebraska 7002211090000000000211.09 acres (0.8543 km2)
Hovenweep National Monument Colorado / Utah 7002784930000000000784.93 acres (3.1765 km2)
Jewel Cave National Monument South Dakota 70031273510000000001,273.51 acres (5.1537 km2)
John Day Fossil Beds National Monument Oregon 700414062020000000014,062.02 acres (56.9070 km2)
Lava Beds National Monument California 700446692420000000046,692.42 acres (188.9575 km2)
Little Bighorn Battlefield National Monument Montana 7002765340000000000765.34 acres (3.0972 km2)
Montezuma Castle National Monument Arizona 70031015520000000001,015.52 acres (4.1097 km2)
Muir Woods National Monument California 7002553549999999999553.55 acres (2.2401 km2)
Natural Bridges National Monument Utah 70037636490000000007,636.49 acres (30.9038 km2)
Navajo National Monument Arizona 7002360000000000000360 acres (1.5 km2)
Ocmulgee National Monument Georgia 7002701540000000000701.54 acres (2.8390 km2)
Oregon Caves National Monument Oregon 7002487980000000000487.98 acres (1.9748 km2)
Organ Pipe Cactus National Monument Arizona 7005330688860000000330,688.86 acres (1,338.2503 km2)
Petroglyph National Monument New Mexico 70037209300000000007,209.3 acres (29.175 km2)
Pipe Spring National Monument Arizona 700140000000000000040 acres (0.16 km2)
Pipestone National Monument Minnesota 7002281780000000000281.78 acres (1.1403 km2)
Poverty Point National Monument Louisiana 7002910850000000000910.85 acres (3.6861 km2)
Rainbow Bridge National Monument Utah 7002160000000000000160 acres (0.65 km2)
Russell Cave National Monument Alabama 7002310450000000000310.45 acres (1.2563 km2)
Salinas Pueblo Missions National Monument New Mexico 70031071420000000001,071.42 acres (4.3359 km2)
Scotts Bluff National Monument Nebraska 70033004810000000003,004.81 acres (12.1600 km2)
Statue of Liberty National Monument

  • Ellis Island

New York and New Jersey 700160860000000000060.86 acres (0.2463 km2)
Sunset Crater Volcano National Monument Arizona 70033040000000000003,040 acres (12.3 km2)
Timpanogos Cave National Monument Utah 7002250000000000000250 acres (1.0 km2)
Tonto National Monument Arizona 70031120000000000001,120 acres (4.5 km2)
Tuzigoot National Monument Arizona 7002811890000000000811.89 acres (3.2856 km2)
Virgin Islands Coral Reef National Monument U.S. Virgin Islands 700412708070000000012,708.07 acres (51.4277 km2)
Walnut Canyon National Monument Arizona 70033529260000000003,529.26 acres (14.2824 km2)
White Sands National Monument New Mexico 7005143733250000000143,733.25 acres (581.6678 km2)
World War II Valor in the Pacific National Monument

  • USS Arizona Memorial

Hawaii, California, Alaska 700159030000000000059.03 acres (0.2389 km2)
Wupatki National Monument Arizona 700435422130000000035,422.13 acres (143.3483 km2)
Yucca House National Monument Colorado 700133870000000000033.87 acres (0.1371 km2)

Decommissioned national monuments

Name Established Disbanded Result
Papago Saguaro National Monument January 31, 1914 April 7, 1930 Transferred to Arizona; now jointly operated by the cities of Phoenix and Tempe
Lewis and Clark Cavern National Monument May 11, 1908 August 24, 1937 Transferred to Montana; now operated as a state park
Father Millet Cross National Monument August 10, 1933 September 7, 1949 Transferred to New York upon the closing of the adjacent military base; now operated part of Fort Niagara State Park
Wheeler National Monument December 7, 1908 August 3, 1950 Returned to United States Forest Service
Holy Cross National Monument May 11, 1929 August 3, 1950 Returned to United States Forest Service
Jackson Hole National Monument 1943 September 14, 1950 Merged into Grand Teton National Park
Shoshone Cavern National Monument September 21, 1909 May 17, 1954 Transferred to Cody, Wyoming as a municipal attraction, and later returned to the Bureau of Land Management.
Old Kasaan National Monument October 25, 1916 July 26, 1955 Transferred to United States Forest Service
Castle Pinckney National Monument August 10, 1933 March 29, 1956 Transferred to South Carolina, and later sold to the Sons of Confederate Veterans; site currently inaccessible and unmaintained
Verendrye National Monument June 29, 1917 July 30, 1956 Transferred to North Dakota after the construction of the Garrison Dam; site currently flooded by the reservoir Lake Sakakawea
Fossil Cycad National Monument October 21, 1922 August 1, 1956 Transferred to Bureau of Land Management because of severe vandalism to the site
Ackia Battlefield National Monument August 27, 1935 August 10, 1961 Incorporated into Natchez Trace Parkway
Meriwether Lewis National Monument February 6, 1925 August 10, 1961 Incorporated into Natchez Trace Parkway
Petrified Forest National Monument December 8, 1906 December 9, 1962 Incorporated into Petrified Forest National Park
Lehman Caves National Monument June 10, 1933 October 27, 1986 Incorporated into Great Basin National Park
Mound City Group National Monument January 1, 1918 January 2, 1992 Incorporated into Hopewell Culture National Historical Park
Minidoka Internment National Monument January 17, 2001 May 8, 2008 Incorporated into Minidoka National Historic Site