Theopetra Cave, located in the Meteora limestone rock formations of Thessaly, Central Greece, is likely to be the place of the oldest human construction on earth, as findings indicate that the cave was inhabited as early as 130,000 years ago.

It is the oldest known example of a man-made structure. The wall is thought to have been built to protect its residents from cold winds at the height of the last ice age. Geologically, the formation of the limestone rock has been dated to the Upper Cretaceous period, 135–65 million years BP.

Meteora, located in Thessaly, Greece, is famous for its unique rock formations and its monasteries perched atop vertical peaks. Meteora which translates to 'suspended in the air' in Greek, is a valley formed about 60 million years ago with the weathering away of the rocks to form columns and spires of rock.

The name says it all: Derived from the ancient Greek word metéōros, meaning “raised from the ground, hanging, lofty,” Meteora gets its name from the monasteries that sit high atop the stone pillars.