The Evergreen Aviation Museum exists to present the history of air and space technology and to honor United States veterans. Collection highlights include a replica of Wilbur and Orville Wright's 1903 Flyer; the circa 1947 Hughes Flying Boat or "Spruce Goose," the largest aircraft ever constructed; and the Russian Photon space capsule, launched 1990. More than 50 aircraft are on display.

The museum offers exhibits, self-guided tours, guided tours, guided tours and activities for students, a summer camp, story times and crafts for kindergartners through third graders, a youth ground school, a youth overnight program, a junior docent program, Scout programs, radio-controlled flying seminars, archival access, two cafes, and boxed lunches. Reservations are required for group tours. Two weeks advance notice is required for groups of 20 or more wanting boxed lunches. Appointments are required for archival access. Wheelchairs are available for use on site. The website offers an education assistance grant application, relevant activities, and a teacher's guide.