11.Eljava Air Base
Location: Croatia’s Eljava
Total Expense: $6 Billion* Completed Year: 1968
If you’ve ever watched a movie where the actors come out of a subterranean airport and you thought, “That must exist somewhere,” well, it does. In fact, it exists in a lot of locations. But one of the biggest is located in Croatia’s Željava, inside the Plješevica mountain.
Pinterest/@atlasobscura/eljava Air Base
One of the biggest subterranean air bases in Europe, if not the entire world, is the Eljava Air Base. Since it’s a military base, a lot of activity takes place in secret. Nonetheless, we are aware that the airfield was constructed for about $6 billion and has a 1,000-person dining hall, several power generators, and an underground water supply. One item you won’t find there is two-day Amazon Prime shipping.
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