O'Hare- (ph:773.686.2200)handles more passengers than any other airport in the world.Airport information booths are located on the lower levels of the domestic terminals and on the upper and lower levels of the International Terminal.A foreign currency exchange is located on the lower level of the International Terminal.Shuttle service to downtown hotels is available at the baggage claim level.Taxis and Chicago Transit Authority's (CTA)rapid transit trains are available on the lower level of the terminals.
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