The March Air Field Museum is an aviation museum featuring many artifacts and aircraft from both the military and civilian worlds. The museum, which has exhibits on World War I, space exploration, and the B-17, is located at March Air Force Base in Riverside.

The Riverside Metropolitan Museum features the anthropology, natural and cultural histories of the Riverside area. Permanent exhibits include fossils from the San Bernardino Mountains, Native American artifacts (including one of California's largest collections of Native American basketry), an herbarium, over 450 specimens of native wildlife, and items from the area's citrus industry.

The Orange Empire Railway Museum in Perris houses one of the largest collections of train, trolley, and street cars, locomotives, and railway artifacts in the west. The museum runs train rides in many historic caboose and train cars and many other events throughout the year.

The Quality West Wing Foundation is a non-profit organization in Corona that strives to bring a bit of Washington D.C. to Southern California, mostly for the benefit of school field trips. Inside a life-size replica of the Oval Office, kids will learn about presidents, what it's like to be President, and how the government works.

The Western Science Center in Hemet features paleontological and anthropological items that have been discovered in nearby Diamond Valley Lake, dating back to the Ice Age and early Native American eras. Visitors will get to see the largest mastodon ever unearthed in the Western U.S. (named Max), and over 1 million other objects like fossils, saber toothed tigers, and Native American artifacts.

The Riverside Art Museum features American, Californian, and local Inland Empire visual arts. The museum runs a monthly art walk and various events and programs throughout the year.

Maloof Residence and Gardens is the former home of Sam Maloof, legendary woodworker and leader of the modern arts movement in California, and his wife Alfreda. The home was built by Maloof himself in the middle of a lemon grove and features many of his his works and various other artistic exhibitions as well.

Planes of Fame Air Museum in Chino preserves and showcases over 150 aircraft and the history of aviation. The museum puts on themed air shows, such as planes of WWI or planes that have been in movies, to show off their many aircraft in flyable condition.