The EAA Aviation Museum, formerly the EAA AirVenture Museum (or Air Adventure Museum), is a museum dedicated to the preservation and display of historic and experimental aircraft as well as antiques, classics, and warbirds. The museum is located in Oshkosh, Wisconsin, United States, adjacent to Wittman Regional Airport, home of the museum's sponsoring organization, the Experimental Aircraft Association (EAA), and the organization's EAA AirVenture Oshkosh event (the world's biggest fly-in and airshow) that takes place in late July/early August.