The California Office of Historic Preservation (OHP) administers federally and state mandated historic preservation programs to further the identification, evaluation, registration, and protection of California’s irreplaceable resources.
ohp.parks.ca.gov Main Page
California Historical Landmarks (CHLs) are buildings, structures, sites, or places that have been determined to have statewide historical significance by meeting at least one of the criteria listed below:
A prototype of, or an outstanding example of, a period, style, architectural movement or construction or is one of the more notable works or the best-surviving work in a region of a pioneer architect, designer, or master builder.Landmarks in Napa County
The first, last, only, or most significant of its type in the state or within a large geographic region (Northern, Central, or Southern California).
Associated with an individual or group having a profound influence on the history of California.
