English: Tillamook Air Museum is an aviation museum south of Tillamook, Oregon in the United States. The museum is housed in a former US Navy blimp hangar, called "Hangar B", which is the largest clear-span wooden structure in the world. Constructed by the US Navy in 1942 during World War II for Naval Air Station Tillamook, the hangar building housing the aircraft is 1,072 feet (327 m) long and 296 feet (90 m) wide, giving it over 7 acres (2.8 ha) of area. It stands at 192 feet (59 m) tall. The doors weigh 30 short tons (27 t) each and are 120 feet (37 m) tall. Hangar "B" is one of two that were built on the site originally, Hangar "A" was destroyed by fire in August,1992. (http://www.tillamookair.com/)