The Most Dangerous (And Expensive) Airports Ever Built

56. Sion Airport – Switzerland

Year of construction: 1935
Risk factors: Track in a narrow valley

Sion Airport is the only one in Switzerland that handles both commercial and military flights. Sion’s landing route is a challenge for many pilots. The pilots’ descent must start over the mountains before continuing towards the narrow valley where the airport is located.

Sion Airport – Switzerland @ella777111 / Pinterest.com

In fact, this type of landing requires special training, which is why not all pilots can operate in Sion. Of course, the landscape that passengers and pilots observe when flying over the region are undeniably beautiful.