The Society seeks to promote and preserve the natural, civil, literal, and ecclesiastical history of the Harbor area in general and the City of Costa Mesa in particular. The Society's museum present exhibits tracing the area's history from prehistory to the present day. The Society also maintains the Diego Sepulveda Adobe (the Estancia), the history of which stretches back to the 1700s. Four distinct periods of California history are represented in the rooms of the Estancia—Indian, Mission, Spanish, and Victorian—and the Society has used these periods as guidelines for furnishing the Adobe.

The museum and adobe offers exhibits and tours.

The Autry National Center celebrates the American West through three important institutions: the Museum of the American West, the Southwest Museum of the American Indian, and the Institute for the Study of the American West. The Autry was established in 2003 following the merger of the Southwest Museum, the Women of the West Museum , and the Museum of the American West (formerly the Autry Museum of Western Heritage). Through innovative exhibitions, a broad range of programs, and an extensive collection of art and artifacts, the Autry National Center explores the distinct stories and interactions of cultures and peoples, and their impact on the complex, evolving history of the American West.

The museums provide exhibits, tours, performances, film screenings, and other educational and recreational programs.

The Museum’s national-award-winning exhibits comprise 14,280 square feet and over 10,000 artifacts – tools and equipment - telling the stories of the Columbia Plateau Tenino and Wasco people, Oregon Trail travelers, rural dry-land wheat farmers and their families, military service, schools and toys – from horse-power to electricity and engine-power. Interpretation and hands-on activities for students are suitable for grades K-12. Interpretive materials include A Guide to the Oregon Trails in Sherman County, A Tourist’s Guide to Grain Production, and a twice-yearly historical anthology, Sherman County: For the Record with local stories by local authors. Amenities include clean restrooms, The Museum Store, and rotating exhibits featuring local artists. Open daily May through October 10-5 – otherwise by appointment - next to Moro City Park and History Wall.

The Society seeks to uplift and enrich Gary, Indiana, and surrounding communities by preserving, developing, and sponsoring cultural, historical, and educational programs for citizens of all ages. The Socieety was a catalyst behind the preservation and national historic landmark status of Gary's first building—the 1906 Gary Land Company Building. The Society maintains the buildings as an historical museum and visitor's bureau for school tour groups and visitors to Gary.

The Society offers exhibits and tours.

The Society operates a museum filled with items reflecting Chippewa traditions. These include sculptures created by talented local stone carvers and paintings by both young and old artists. The traditional history collection includes many objects that show the unique culture of the Chippewa, as well as three dioramas, showing the Chippewa transition from the woodlands to the plains, and a recreated Red River ox cart represents the Metis culture also found among the Native regional cultures.

The museums offers exhibits and research library access.

The Society maintains the 1717 Reverend Daniel Putnam House as a museum. Volunteer tour guides, dressed in period costume, explain how daily chores were accomplished in the 1700s, and often cook popular dishes of the day over the kitchen fire.

The house offers tours.

The Sunnyvale Historical Society operates a museum in the restored 1950 Murphy House. The Society's primary mission is to expand the education program offered by the society for third and fourth graders studying local and California history. This program is the only hands-on learning program in the area and is beyond capacity and demand from local schools. The Society's intent is to expand the program to educate 3,000 area students per year.

The museum offers exhibits, tours, demonstrations, a film, and educational programs.

The Society's mission is to preserve the past and present for viewing in the future. The museum, housed in an 1871 Italianate Victorian house, displays several Victorian-era decorated rooms, including a parlor and a kitchen. The Society also has a collection of clothing, toys, pictures, and maps, as well as artifacts and memorabilia on high school teacher Walter Duhrban of Walt's Workshop, a 1950s TV show. The history of Ravinia Park is also preserved here.

The museum offers exhibits.

Created by Congress in 1996, the Rivers of Steel National Heritage Area is committed to preserving, interpreting, and managing the historic, cultural, and natural resources related to Big Steel and its related industries. Encompassing over 5,000 square miles in the seven counties of Allegheny, Armstrong, Beaver, Westmoreland, Greene, Fayette, and Washington, Rivers of Steel is building on this area's remarkable transition from heavy industry to high technology and diversified services as well as bolstering the new regional economy by promoting tourism and economic development based on this region's historic industrial saga.

A multifaceted program, the Rivers of Steel National Heritage Area's mission includes: historic preservation, cultural conservation, education, recreation, and resource development. Currently, the Heritage Area has bills in Congress to create the Homestead Works National Park. The proposed park would be located on 38 acres surrounding the Carrie Furnaces, the last of the giant blast furnaces from the Homestead Works, and the Pump House, site of the bloody 1892 Homestead Steel Strike.

River of Steel also maintains the Bost Building, an 1892 hotel, in which it presents exhibits.

The Bost Building offers exhibits and educational programs.

Housed in an 1891 structure used 1962 by the Life-saving Service and then by the Coast Guard, the museum offers exhibits featuring the history of the U.S. Life-saving Service and of Ocean City. It also displays a mermaid collection, shipwreck artifacts, sands of the world, and bathing fashions. Aquariums feature local marine life.

The museum offers exhibits, tours, and educational programs and demonstrations.