Devetashka Cave

With its massive halls and unreal gaps in the ceiling, the Devetashka Cave looks like a landscape straight out of a sandbox video game like Minecraft! The cave was discovered in 1921 near the village of Devetaki not far from Lovech in North Central Bulgaria.

Due to its enormous size, it had been used by the Bulgarian state for storing foods and petrol before becoming a secretive military site. And in 2011, the Devetashka Cave was the setting for a few scenes from the star-studded Hollywood blockbuster The Expendables 2, making it famous worldwide.