Classified for credit

Historic 1790s rancho in Long Beach with preserved adobe structures, working gardens, and exhibits on Spanish, Mexican, and American ranching eras.

Vibrant outdoor folk-art environment created by artist Randy Gilson — supports discussion of community public art, self-taught art traditions, and urban creativity.

19th-century Victorian estate in Livermore Valley — covers California ranching history and late-1800s domestic social history.

Visitor and education center documenting Ronald Reagan's life and presidency — covers Cold War history, conservative political movement, and 20th-century U.S. policy.

Botanic garden specializing in California native plants within Tilden Regional Park — covers plant ecology, native habitats, and regional biodiversity.

Visitor center at an active open-pit borax mine — covers industrial mineralogy, desert geology, and large-scale mining operations.

Oddity and curiosity exhibit covering unusual world records, natural phenomena, and human achievement — supports critical thinking and world geography.

Regional art museum in a historic Mission Inn-adjacent building — covers American and California art history through permanent and rotating collections.

Public observatory operated by volunteers with large telescopes — covers stellar physics, optics, and observational astronomy through guided nighttime viewing.

Telephone history museum tracing communication technology from early telephony to digital networks — covers electrical engineering and technology history.

City-run utility education center with hands-on exhibits covering water treatment, electricity, recycling, and public infrastructure systems.

NPS site documenting WWII civilian war production and the Home Front experience — covers labor history, industrial mobilization, and women's roles in wartime.

Urban wildlife center on Lake Merritt with waterfowl habitat and nature exhibits — covers local ecology and bird biology.

Chico State planetarium — astronomy programs and immersive sky shows for school groups.

Small aquarium on the Manhattan Beach pier featuring live local marine specimens — covers Southern California coastal ecology, marine biology, and tidal zone species.

Museum in Barstow dedicated to Route 66 history — covers 20th-century American transportation, westward migration, and roadside culture.

Sacramento history museum in the restored 1854 City Hall covering the Gold Rush, California statehood, and Sacramento's role as the transcontinental railroad terminus.

Federal wildlife refuge on the Pacific Flyway with a driving tour route — migratory waterfowl biology, wetland ecology, and conservation management.

University-operated planetarium at Sacramento State — covers astronomy, orbital mechanics, and cosmology through live sky shows and dome presentations.

Public planetarium at Antelope Valley College with dome shows on astronomy and space science — covers celestial mechanics, cosmology, and Earth's place in the solar system.

Northern California coastal state park with kelp forest tide pools and rocky intertidal zones — supports marine biology, geology, and coastal ecology.

Museum and visitor center documenting the Salton Sea's formation, ecological changes, and Southern California water history.

Historic 48-inch Schmidt telescope at Palomar Observatory — covers optics, astrophysics, and the history of photographic sky surveys.

Museum documenting San Bernardino's railroad history with rolling stock and artifacts — industrial history, mechanical engineering, and westward expansion.