This park is part of a nationally recognized historic landmark and can be found adjacent to the extant portion of one of California's 21 Spanish-era mission church sites. The park and its Plaza represent what was once the "town square" of the largest town in central California and a vital crossroad for travel between northern and southern California. In the park visitors can gain an appreciation of California peoples, from Native Americans, through the Spanish and Mexican cultural influences, right up to the American period in the late 19th century. The park site includes several structures built in the 1800s. These include the four main historic structures of the Plaza Hotel, the Zanetta House/Plaza Hall as well as Plaza Stables, and the newly reopened Castro-Breen Adobe with colorful and informative exhibits to help create a learning environment for people of all ages. Many of the interiors are arranged as furnished vignettes. The park also features a blacksmith shop, the historic jail, and an early American settler's cabin.

The park offers exhibits, tours, and occasional living history events.

The Forney Transportation Museum chronicles the history of motorized transportation, from trains and vintage automobiles to snowmobiles and motorcycles. The museum boasts an impressive collection of vintage vehicles and is open to visitors year round.

The museum offers guided tours, special presentations, and exhibits on the history of transportation. The website offers visitor information and an events calendar.

The Bolinas Museum is the premier art museum of Marin County just north of San Francisco. The museum's primary focus is on local art, as many talented artists are attracted to coastal Marin County communities.

The museum offers guided and self-guided tours, exhibits, and special events including lectures and special presentations. The website offers visitor information, information regarding current exhibits, and a calendar of events.

The San Diego Maritime Museum presents one of the world's strongest collections of historic vessels. Highlights include an 1898 steam ferry, the Berkeley; a 1904 steam yacht, the Medea; a B-39 Soviet attack submarine; and the 1863 Star of India, the world's oldest active ship. Replicas include the HMS Surprise, an 18th-century Royal Navy Frigate used in the film Master and Commander: The Far Side of the World, and the Californian, a mid-1800s revenue cutter. Exhibits include the ages of sail and steam, the Navy, navigation and surveying, and the tuna industry.

The museum offers one- or two-hour historic cruises on the 1914 Pilot; overnight and day history role playing educational programs; science programs; an educational sailing program aboard the Californian; guided museum tours; exhibits; tours of the Star of India, HMS Surprise, B-39 Submarine, Berkeley, and the Medea; and world cruises led by historians. The website offers information for children; virtual tours of the Star of India, Berkeley, HMS Surprise, and Californian; and numerous videos. All tours require reservations.

The Medicine Lodge site has long been known for its Indian petroglyphs and pictographs. They are directly associated with important human habitation sites for thousands of years.

The site offers exhibits.

The Mai Wah Society is dedicated to preserving the history of Asian immigrants in the Rocky Mountain region. The Mai Wah Society has worked to Mai Wah Noodle Parlor buildings, which now serve as a museum of the culture and heritage of Asian immigrants in Butte, Montana.

The museum offers exhibits, tours, and occasional special events, including a Chinese New Year celebration. The website offers visitor information and a brief history of the building which houses the museum.

The mission of the Committee of One Hundred is to preserve Balboa Park, California's Spanish Colonial architecture.

The committee offers a fourth grade educational program including an outreach slide presentation and a walking tour, guided walking tours,

Visitors to the site of this 1835 fur-trading fort can follow the paths of founders Louis Vasquez and Andrew Sublette. The traders employed many of their mountain-man friends, including Baptiste Charbonneau and Jim Beckwourth, at their adobe outpost on the South Platte River.

The museum offers exhibits, tours, and educational programs.

Novo Restoration seeks to prevent the demolition of and determine a new function for Loveland, Colorado's historic feed and grain building. As of yet, the proposed re-purposing is development of artist housing.

This organization offers monthly tours.

The Historical Museum at St. Gertrude presents the history of North Central Idaho. Collections include more than 10,000 archival materials; 150 years of textiles; weaponry, some of which was used in the 1877 Nez Perce War; Nez Perce artifacts; a range of historic office machinery, including a 1902 Burroughs “Moon Hopkins” bookkeeping machine and an 1895 Dactyle calculator; world minerals; mining equipment; medical artifacts, including a 1900 fetal monitor and a tonsillectomy chair; and artifacts of Chinese immigrants. The museum also owns many of Polly Bemis' previous possessions. Bemis (1853-1933), originally from China, was brought to an Idaho mining camp as a female slave. Roughly 12,000 artifacts, some of which date to the 14th century, are on display.

The museum offers exhibits