Rock carving created 1,300 years ago 75 feet off the ground.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

An homage to the medieval rulers of Bulgaria.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

These natural cliffs look like they are a part of an old castle complex.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

An abandoned saucer-shaped monument in the Bulgarian mountains.

UNESCO-protected ancient burial ground.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

The most metal church of all time was built in record time because of an international, pious pissing contest.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

This museum was invented in a novel before being made real by the author.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

You'll find just about anything in this funky Tbilisi flea market.

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

With over 10,000 lights, this engineering marvel lights up the city after dark.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

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