9. Gibraltar Airport – United Kingdom

Year of construction: 1939
Risk factors: Track intersects the road

Gibraltar Airport is considered the most dangerous in Europe after Madeira. The reason? It is the only one in the world whose runway meets the road, and at the same level! This is because the airport made maximum use of its minimal space.

So, when a plane is close, highway traffic stops to give way to the aircraft. This means that any traffic accident could affect the takeoff or landing of the planes. At this airport, what was saved in space is lost in security.