National Historic Landmark · Sonoma, California

Sonoma Plaza

Added to the National Register in 1975, and a National Historic Landmark.

Sonoma Plaza
Photos via Wikimedia Commons

The record

Property typeHistoric district
AddressCenter of Sonoma, Sonoma, CA
CountySonoma County
ListedApr 3, 1975
Listed forMilitary, Politics and government, Architecture
Level of significanceNational
Also known asOl Sonoma; Sonoma Pueblo; See Also:Vallejo Estate; Sonoma Plaza
Reference number75000489
StyleItalianate architecture, Spanish Colonial architecture
DesignationsNational Historic Landmark

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

Visiting

AddressCenter of Sonoma, Sonoma, CA
Coordinates38.2936° N, 122.4533° W · Directions ↗
A district listing covers the streets, not the doors. Walk it freely; the buildings inside are as private as they ever were.

Explore

Map

Local history books for Sonoma County

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

Guidebooks to historic places in California

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

Reference

Questions people ask

When was Sonoma Plaza listed on the National Register?

Apr 3, 1975. It is also a National Historic Landmark, the higher of the two designations.

Source: National Park Service

Where is Sonoma Plaza?

Center of Sonoma, Sonoma, Sonoma County, California.

Source: National Park Service

Where is the nomination form for Sonoma Plaza?

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 75000489. 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.