Since 2000, the busiest airport is the world is Atlanta's Hartsfield-Jackson International Airport. The airport sees 94 million passengers annually, whereas the Beijing Capital International Airport, the second busiest airport, sees almost 84 million passengers annually. Many improvements were made to the Hartsfield-Jackson International Airport over the last decade, leading the Airport Transport Research Society to name it as the world's most efficient airport in 2011.
More about airports:
- The world's oldest airport still in operation is College Park Airport in Maryland.
- Gibraltar Airport has a runway that intersects one of the city's busiest roads. Crossing gates, like those used for railroads, stop traffic whenever a plane lands or departs.
- Prior to the development of modern airports, aircraft would take off and land in fields, and only functioned in dry conditions.