Vienna, town (1990 pop. 14,852), Fairfax co., N Va., a residential suburb of Washington, D.C.; inc. 1890. There is computer software research. Originally called Springfield, Vienna became the site of Fairfax county's first courthouse in 1742. Wolf Trap Farm Park for the Performing Arts is on the city's outskirts. Nearby is the enormous Tysons Corner Center mall, which attracts shoppers from the N Virginia–Washington, D.C., area.