5. Barra International Airport, Scotland
Takeoffs and landings at Barra Airport occur on the same sand that people can stroll along during airport off-hours. During high tide in the evening, the illumination from the lights of all the cars passing by assist the pilot with his landing. Barra is still an officially recognized international airport by the Air Traffic Organization, and it seems like any kind of logical or critical suggestion would be deemed irrelevant by the authorities.