List of National Historic Landmarks in Idaho

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This is a complete List of National Historic Landmarks in Idaho. The United States National Historic Landmark program is operated under the auspices of the National Park Service, and recognizes structures, districts, objects, and similar resources nationwide according to a list of criteria of national dept.[1]

Map all coordinates using: OpenStreetMap 
Download coordinates as: KML · GPX

The state of Idaho is home to 10 of these landmarks, spanning a range of history from the Lewis and Clark expedition to the beginnings of nuclear power. The table below lists all 10 of these sites, along with added detail and description.

[2] Landmark name Image Date designated[3] Location County Description
1 Assay Office
Assay Office, Boise, Idaho.
May 5, 1961
43°36′41″N 116°11′45″W / 43.61139°N 116.1958°W / 43.61139; -116.1958 (Assay Office)
Ada This assay office symbolizes the importance of mining in the history of Idaho and the American West. Built in 1870-71, it operated by the federal government until 1933.
2 Bear River Massacre Site
Photograph of the Bear River Massacre Site, a wide, open grassland with scattered trees, low hills in the background, and a highway alongside.
June 21, 1990
42°08′46″N 111°54′51″W / 42.1461°N 111.9142°W / 42.1461; -111.9142 (Bear River Massacre Site)
Franklin Where California Volunteers wrought Bear River Massacre upon a Shoshoni village in 1863.
3 Camas Meadows Battle Sites
Camas Meadows Battle Sites
April 11, 1989
44°21′11″N 111°53′06″W / 44.3531°N 111.885°W / 44.3531; -111.885 (Camas Meadows Battle Sites)
Clark Sites of the 1877 Battle of Camas Creek, which allowed Nez Perce to further elude capture during the Nez Perce War.
4 Cataldo Mission
Cataldo Mission
July 4, 1961
47°32′55″N 116°21′30″W / 47.54864°N 116.3583°W / 47.54864; -116.3583 (Cataldo Mission)
Kootenai This Jesuit mission to the Coeur d'Alenes, dating from the 1850s, is the oldest remaining mission church in the Pacific Northwest.
5 City of Rocks
City of Rocks.
July 19, 1964
42°04′33″N 113°42′52″W / 42.0758°N 113.7144°W / 42.0758; -113.7144 (City of Rocks)
Cassia Thousands of emigrants on the California Trail made this a popular resting point, and left wagon ruts that are still visible today. For these emigrants, the landscape of rock outcrops rising like city buildings, woodlands, and mountains provided a welcome change from the surrounding sagebrush plains.
6 Experimental Breeder Reactor No.1
Experimental Breeder Reactor No. 1.
December 21, 1965
43°30′34″N 113°00′20″W / 43.5095°N 113.0056°W / 43.5095; -113.0056 (Experimental Breeder Reactor No.1)
Butte This pioneering nuclear reactor was the site of several milestones in the development of nuclear technology, including the first usable electricity (1951), the first self-sustaining chain reaction using plutonium rather than uranium (1963), and the first demonstration of the feasible use of high-temperature liquid metal as a reactor coolant.
7 Fort Hall
Marker at first Fort Hall site, 1958
January 20, 1961
Fort Hall
43°01′13″N 112°38′05″W / 43.0203°N 112.6347°W / 43.0203; -112.6347 (Fort Hall)
Bannock Outpost where the Oregon Trail forked, splitting off the California Trail.
8 Lemhi Pass
Photograph of the view from Lemhi Pass, eastward over the rolling, green, and partially wooded Bitterroot Mountains.
October 9, 1960
Tendoy, ID
44°58′29″N 113°26′41″W / 44.9747°N 113.4447°W / 44.9747; -113.4447 (Lemhi Pass)
Lemhi, ID and Beaverhead, MT Pass crossed by the Lewis and Clark Expedition in August 1805
9 Lolo Trail
Lolo Trail
October 9, 1960
Lolo Hot Springs, MT
46°38′07″N 114°34′47″W / 46.6353°N 114.5797°W / 46.6353; -114.5797 (Lolo Trail)
Clearwater, ID and Missoula, MT Difficult trail followed by the Lewis and Clark Expedition in 1805 and returning in 1806.
10 Weippe Prairie
Camas field on Weippe Prairie.
May 23, 1966
46°22′00″N 115°56′00″W / 46.3667°N 115.9333°W / 46.3667; -115.9333 (Weippe Prairie)
Clearwater Meadow of camas, whose roots were basic food for Nez Perce, where the Lewis and Clark Expedition emerged from Lolo Trail.

There are other historic sites preserved in Idaho. Considering them provides perspective on the NHLs. In particular, there are two areas in the National Park System:

  • Nez Perce National Historical Park, a set of 38 sites located throughout the states of Idaho, Montana, Oregon, and Washington which are the traditional aboriginal lands of the Nez Perce. The sites commemorate the history, culture, and stories of the people. Its headquarters are located in Lapwai, Idaho.
  • Minidoka National Historic Site, established in 2001, one of ten camps at which Japanese Americans were interned during 1942-45.

Besides the NHLs and NPS areas, the state has approximately 1,000 properties and districts listed in Idaho on the National Register of Historic Places. Some recently listed properties may not yet be in that system. New listings nationwide are announced weekly.

See also[edit]


  1. ^ National Park Service. "National Historic Landmarks Program: Questions and Answers". Retrieved 2007-09-21.
  2. ^ Numbers represent an ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
  3. ^ The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.

External links[edit]