The Marston House Museum is one of San Diego's finest examples of the Arts and Crafts architectural movement. Completed in 1905 for prominent merchant and civic leader, George W. Marston, and his family, this 8,500 square-foot home is surrounded by four acres of rolling lawns, manicured formal gardens, and canyon pathways. It is furnished with Mission-style pieces like those designed by brothers Gustav, Leopold, and John George Stickley, and a variety of decorative pottery, paintings, and textiles created by world-renown Craftsman artisans.

The house offers tours.

Home of the California Legislature since 1869, the State Capitol underwent a major renovation that restored much of the building's original look. Visitors can tour the restored historic offices of the Secretary of State, Treasurer, and Governor of the State of California. The building features exhibits and tours—and possibly an opportunity to watch the legislators debate a bill or cast a vote.

The museum offers exhibits, tours, film screenings, and occasional recreational and educational events.

Originally built in 1856 by Gold Rush merchant Sheldon Fogus, the Mansion was later purchased and remodeled (twice) by Leland and Jane Stanford. Leland Stanford served as Governor of California from 1862–1863. The Mansion served as the office of three governors during the turbulent 1860s: Leland Stanford, Fredrick Low, and Henry Haight. Today, it stands as an example of the splendor and elegance of the Victorian era in California. On a tour of the 19,000-square-foot Mansion visitors will see 17-foot ceilings, gilded mirrors and detailed carved moldings, restored woodwork, 19th-century crystal and bronze light fixtures, historic paintings, recreated carpeting and draperies based on photographs from the 1870s to match the original interior design; original period furnishings that belonged to the Stanfords; and 19th-century-style gardens.

The site offers a short film, exhibits, tours, and occasional recreational and educational events.

Los Encinos State Historic Park was the hub of Rancho El Encino. Located in the San Fernando Valley, this California rancho includes the original nine-room de la Ossa Adobe, the two-story limestone Garnier building, a blacksmith shop, a natural spring, and a pond. Located along a significant travel route between Los Angeles and Santa Barbara, the property passed through many hands between the 1840s and the early 20th century. Today, the park contains exhibits related to the agricultural enterprises of Rancho El Encino's various owners, including Mission Indian, Mexican Californio, French, and French Basque families.

The site offers exhibits, tours, and living history events.

The Covina Valley Historical Society is dedicated to preserving the historical heritage of Covina and West Covina, California, which today are suburbs of Los Angeles. The society maintains two buildings, a local history museum housed in the Firehouse Jail Museum, and the Heritage House, which serves as a historic house museum.

The society offers exhibits, guided tours, and special events. The website offers a brief history of the society as well as visitor information.

The Santa Ana Historical Preservation Society is dedicated to preserving the historical and architectural heritage of Santa Anna, California. The society owns and operates the Dr. Howe-Waffle House, which is on the National Register of Historic Places, and today operates as a historic house museum.

The society offers guided tours of the Dr. Howe-Waffle House and special events. The website offers visitor information, histories of Santa Anna and the Dr. Howe-Waffle House, an events calendar, and a virtual tour of the home.

The Fresno Historical Society is dedicated to preserving the history of Fresno, California, and of California's Central Valley, one of the five most fertile valleys in the world. The society also operates the Kearney Historic Site, which showcases the history of the valley through the home of Theo Kearney, a raisin mogul.

The society offers a lecture series, tours of the Kearney estate, field trip programs, and educational outreach programs. The website offers visitor information, a history of the society, a history of the Kearney Historic Site, and an events calendar.

Noted architects Charles and Henry Greene designed the Gamble House in 1908 for the Gamble family of Proctor & Gamble fame. The home is one of the finest examples of Arts and Crafts style architecture in the country. Today, the home is administered by the University of Southern California and serves as a historic house museum.

The house offers guided tours and special events such as presentations. The website offers visitor information, a history of the home, biographies of the architects, a virtual tour, and an events calendar.

The historic town of Sonoma is located in the heart of the beautiful wine country between Napa and Santa Rosa off Highway 12. Situated around a central plaza (the largest of its kind in California) filled with shops and restaurants, the city is home to Sonoma State Historic Park—site of the northernmost Franciscan Mission in California and birthplace of the California State Bear Flag. Unlike most parks with a plot of land and geographical boundaries, Sonoma State Historic Park is a series of historic attractions in several locations within the community. The park is comprised of six sites: the Mission San Francisco Solano; the Blue Wing Inn; the Sonoma Barracks; and the Toscano Hotel, as well as La Casa Grande and Lachryma Montis, the homes of General Mariano Guadalupe Vallejo, Military Commander and Director of Colonization of the Northern Frontier.

The park offers exhibits and tours.

In 1839 a Swiss immigrant named John Sutter received a land grant in the Sacramento Valley from the Mexican government. He used the land to create a flourishing agricultural empire and named it New Helvetia (New Switzerland.) This empire established Sacramento's earliest settlement and the first non-Indian settlement in California's Central Valley. In 1847, Sutter sent aid to the Donner Party, a group of immigrants trapped in a winter storm in the Sierra Nevada Mountains. Word spread and Sutter became known for his hospitality and for providing temporary refuge to travelers. This reputation made New Helvetia the destination for early immigrants to California. Less than a decade after they were established, Sutter's properties were overrun by gold seekers and the fort is all that remains of New Helvetia. It has been restored to its former state based on an 1847 map published in Darmstadt, Germany and is open daily for tours.

The park offers exhibits; tours; and recreational and educational events, including living history events.