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

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

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

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

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

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.

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

One man’s collection of photography books has transformed into a charming exhibition space.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

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

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Huge stairway leads to this massive gallery.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

One of the best collections of Byzantine art housed in a magnificent, 19th-century neoclassical home.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

Where commuters walk through remnants of an ancient Greek necropolis.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

These caves secretly held national treasures during World War II.

At this concrete bunker on the Trondheim fjord, secrets lie above and below the water's surface.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.