Zeljava military airbase
History and adventure tour
Once a top-secret military complex, Željava Airbase was one of the most ambitious and expensive Cold War projects in Europe, costing a staggering $6 billion.
Built to withstand a 20-kiloton nuclear strike, its massive underground tunnels—stretching over 3 kilometers—were designed to shelter 58 MiG-21 fighter jets.
Abandoned after the Yugoslav Wars, this decaying fortress now stands as a haunting yet fascinating relic of military engineering and Cold War history.
History Comes to Life
Go beyond the ruins—hear real stories about the Cold War, the fall of Yugoslavia, and the people who worked at the base.
Thrilling Adventure
Explore 3 km of dark tunnels with a flashlight, and step into a hidden world beneath the mountains.
Full Access & Expert Guidance
Navigating Zeljava alone is tough. A guide ensures you see everything—hidden chambers, key sites and secret details most visitors miss.
Zeljava airbase tour photos
Itinerary
The tour will start in front of an abandoned airplane Douglas C-47 Skytrain or Dakota. Driving across runways, we begin to catch views of a plane-shaped hole in the hill. Reaching the entrance of the tunnels, we are in front of the highlight of the tour. While checking the flashlights, we will get to know the basic information about the object and the safety rules that we need to follow. During our 3-kilometer walk through dark tunnels, we will talk about construction, operational days and destruction of the base. We will cover personal stories and experiences of employees, relationships, and conflicts. The tour will end back at the airplane.
Duration: 2Hours
Languages: English, Croatian
Includes: Strong flashlights
Not included: Transfer
Meeting point: In front of the airplane
Location: Douglas C-47 B Dakota
- Not suitable for children under 8, people with claustrophobia.
- Please contact for bigger groups or private tours.
- Cancel 1 day before the tour for refund
