Prague is served by Václav Havel Airport Prague, the largest airport in the Czech Republic and one of the largest and busiest airports in central and eastern Europe. The airport is the hub of carriers Smartwings and Czech Airlines operating throughout Europe. Other airports in Prague include the city's original airport in the north-eastern district of Kbely, which is serviced by the Czech Air Force, also internationally. It also houses the Prague Aviation Museum. The nearby Letňany Airport is mainly used for private aviation and aeroclub aviation. Another airport in the proximity is Aero Vodochody aircraft factory to the north, used for testing purposes, as well as for aeroclub aviation. There are a few aeroclubs around Prague, such as the Točná airfield.