Indianapolis International Airport — Indianapolis, United States

IND serves the Indiana state capital and sits at the heart of one of the busiest cargo operations in American aviation, functioning as the second-largest hub in the FedEx Express air network after Memphis and processing enormous volumes of overnight packages each night. Passenger facilities modernized substantially in 2008 with the opening of the Colonel H. Weir Cook Terminal, a design that replaced an older midfield complex and has drawn praise in traveler satisfaction surveys for its efficient layout and short walking distances. Indianapolis itself is best known internationally for hosting the Indianapolis 500, and race weekends bring noticeable surges in traffic through the airport each spring. Beyond racing and logistics, IND supports a diversified regional economy anchored by manufacturing, life sciences, and logistics firms drawn partly to the city's central location within the American Midwest.