Jetting off on holidayshould be an exciting occasion, however some European holiday hotspots require landing at challenging airports. Four popular European destinations have been ranked among the most dangerous airports in the world.

While many planes take off and land safely at the airports every day, pilots need to be aware of the dangers.It could be tricky runways, weather changes or challenging terrain.

As a result, the pilots undergo specialist training to safely land at these airports. This can be done through ground training, a simulator and in the air.

• Spain's best city break for families has 23C weather in May and £27 flights from UK


• I loved underrated EU island with 300 days of sunshine 3 hours from UK

The European Union Aviation Safety Agency (EASA) ensures safety across the entire continent, with high standards at airports. The majority of airports in Europe are category A, which requires standard training.

Category B airports have "slightly out of the ordinary" features, while category C requires specialist training. Here are some of Europe's most challengingdestinations.

Innsbruck Airport, Austria

Many people head to Innsbruck to take in the stunning Austrian Alps, yet the mountains pose a challenge for pilots. It has been reported that only captains are permitted to land planes at Innsbruck Airport, which is deep in a valley.

The challenging manoeuvre to land in the valley is often made harder by low-level wind. Depending on the weather conditions, the pilot may need to make a tight turn during the approach. There's also a limited possibility for a missed approach due to the mountains surrounding the airport.

Gibraltar International Airport, Gibraltar

Gibraltar has a rather unusual airport setup as a main road crosses the airport. Traffic is stopped around 15 times a day to let planes land and take off.

For pilots, the challenges come due to abnormal wind effects, turbulence and wind due to the famous Rock of Gibraltar. Diversions and go-arounds are common, with some flights even abandoning attempting to land.

Cristiano Ronaldo Airport, Madeira

Madeira's runway may look rather precarious due to it being a bridge right by the water. However, it has actually helped to improve safety at the airport.

To land at the island, pilots need special training in order to be granted permission. Experienced pilots have to cross mountains and exposed coastlines before lining up perfectly with the narrow runway while often facing high winds.

Sadly, a fatal accident occurred in 1977 when 131 of the 164 people on a plane died when it fell off at the end of the runway. The accident led to the construction of the runway extension bridge.

Courchevel Airport, France

The airport in the French Alps is often ranked as one of the most dangerous in the world. It has the world's shortest runway and is the highest tarmacked runway in Europe.

Courchevel Airport is 6,588ft (2,008m) above sea level and its runway is just 1,762 ft (537m) long. Only small aircrafts and helicopters are allowed to land there.

To add to the difficulty, the runway doesn't have lighting systems, and the area is often battered by extreme weather conditions in the autumn and winter.