The Presidio of San Francisco has served as a barracks for 218 years, and has been occupied by three countries. Now, visitors can enjoy the stunning architecture of the Presidio, as well as see the historic airfields and national cemetery also located in the park. In addition to the impressive history and culture of the Presidio, the park also serves as a haven for endangered species and features beautiful and expansive views of the Golden Gate Bridge, the city of San Francisco, and Marin County.

The site offers historic information about the Presidio, visitor information, a photo-gallery containing 92 photographs of the Presidio and its surrounding grounds, and resources for educators, including an interactive field trip planner and educational online games for students.

The California Missions are among the United States's greatest cultural treasures. The 21 Spanish missions along the California coast have become some of the state's most significant cities, including San Francisco and San Diego. Founded in 1998, the California Missions Foundation was established with the objective of preserving and protecting the missions. The Foundation is the only organization dedicated to the long-term preservation and restoration needs of all California missions and their associated historic and cultural resources for public benefit.

The site offers a brief synopsis of all 21 missions supported by the foundation, a brief history of the missions in general, and information about past foundation successes and future preservation efforts.

San Francisco Architectural Heritage seeks to preserve and share the history of San Francisco's architectural structures. The society operates the Haas-Lilienthal House, built 1886. It is the only Queen Anne-style Victorian in the country to offer tours regularly. The interior is decorated in period style.

The organization offers Haas-Lilienthal House tours, neighborhood tours, and an educational program for students. This program consists of a teacher's workshop, a traveling trunk, a treasure hunt tour of a Victorian neighborhood, and a tour of the Haas-Lilienthal House. Teachers must be Heritage-trained to participate in the educational programming. The website offers interior photographs and floor plans of the Haas-Lilienthal House.

The Western Neighborhoods Project seeks to preserve and share the history of San Francisco's western neighborhoods—including the Richmond and Sunset Districts.

The organization offers outreach slide shows and lectures. The website offers historic photographs.

The Haas-Lilienthal House was built in 1886, and serves as an example of Queen Anne-style Victorian architecture. Today, the mansion is open as a historic house museum, fully furnished with period furniture.

The house offers docent-led tours, as well as historic photos of the house and the occupants. The website offers a history of the house and its tenants, visitor information, and a virtual tour.

"Founded in 1935, the Marin History Museum celebrates the traditions of innovation and creativity of the people of Marin County. Through exhibitions and educational programs, the Museum inspires honor for the past, an understanding of the present, and an imagination of the future." The museum was opened in 1959, and today offers one changing exhibit per year focusing on the history and culture of Marin County. The museum also offers a variety of educational events and programs throughout the year.

The site offers historical information about the museum, visitor information, an events calendar, event information, and an online store.