National Historic Landmark · Almo, Idaho

City of Rocks

Built 1988. Added to the National Register in 1966, and a National Historic Landmark.

City of Rocks
Photos via Wikimedia Commons

The record

Property typeSite
AddressCity of Rocks State Park, Almo, ID
CountyCassia County
ListedOct 15, 1966
Listed forExploration and settlement
Level of significanceNational
Reference number66000308
Built1988 · more from the 1980s
DesignationsNational Historic Landmark, National Natural Landmark

The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗

Visiting

AddressCity of Rocks State Park, Almo, ID
Coordinates42.076° N, 113.702° W · Directions ↗
Listing on the Register does not open the door. Unless a museum or park runs it, treat this as private property and see it from the sidewalk.

Explore

Map

Local history books for Cassia County

We earn a small commission if you buy through these links. It does not change what we list.

Idaho travel guides

Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

When was City of Rocks listed on the National Register?

Oct 15, 1966. It is also a National Historic Landmark, the higher of the two designations.

Source: National Park Service

When was City of Rocks built?

1988.

Source: Wikidata

Where is City of Rocks?

City of Rocks State Park, Almo, Cassia County, Idaho.

Source: National Park Service

Where is the nomination form for City of Rocks?

The National Archives holds the nomination form, the document that made the case for listing.

Source: National Archives

Sources

Name, location, type and dates come from the National Register office's spreadsheet of listed properties, because the Park Service's spatial data does not carry this listing. The map point comes from Wikidata. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 66000308. Nothing here is transcribed by hand. The nomination form and photographs ↗ at NPGallery are the original nomination as filed with the National Park Service, and the form is often the best description of the place.