The EAA Aviation Center Museum has a collection of over 20,000 historic aviation objects comprising 250 airplanes, five movie theaters, and the Hangar X gallery. It maintains a varied airworthy fleet, from a powered parachute to a B-17 Flying Fortress. It also conducts exhibitions, group tours, and flight operations. A library and museum store are attached. Ski-plane fly-in at the Pioneer Airport is an annual event. The Museum is a venue for business meetings, group functions, banquets, weddings, and anniversaries.