Windblown rock formations in an ancient Roman quarry.

Mysterious tombstones thought to be remnants of Atlantis.

Legends surround an ancient tree trunk riddled with nails for good luck.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

An alchemist's “magic door” stands in the middle of a Roman park.

Rome’s legendary peephole vista is also a former Crusader stronghold.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

Tower with a double-helix spiral, adorned with letters of the Georgian alphabet.

Small church on top of a huge rock column.

Underground monastery and fortress.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

Giant stone letters dedicated to the founder of Armenia's alphabet.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Ancient rock-hewn town that witnessed key events of Georgian history.

Azerbaijani ghost town, decaying after a war left it an armed forces buffer zone.

A geological oddity topped with a 2,000-year-old pagan temple.