11. Toncontin International Airport, Honduras
This civil and military airport is situated in a mountainous area, only 3.7 miles from the center of Tegucigalpa, Honduras. Pilots must make necessary arrangements to prevent them from hitting the nearby mountains.
12. Kansai International Airport, Japan
The Kansai International Airport is located on an artificial island connected to Osaka by a bridge. Glorious as it is, the airport is in danger of sinking because of the rising sea level.