Located between Croatia and Bosnia, Željava was once one of Europe‘s biggest secret bases. These days, the abandoned space is a decaying memorial to the government.
Željava Serbia and Croatia. To give you an idea of Željava’s size, the composite had five runways, several radar and missile sites, police stations, and tunnel systems that could house fleets of aircraft.
The base was used up until the 90s but demilitarized quickly after. Everything was demolished to prevent it from slipping into enemy hands.
In 2004, there was a push to transform the sprawling Union into housing for shelter seekers. Sadly, the idea was abandoned. The countries of former Yugoslavia couldn’t come to a common decision, so the site remains wild.
Who knows what lies hidden in the secret tunnels and underground rooms here? Probably all kinds of fascinating treasures frompast. Just be careful if you’re thinking of exploring Željava in person. There are mines still buried everywhere, and that’s no joke. Dogs are brought here to be trained to sniff out explosives, so we don’t recommend you visit without a proper guide.