According to a local legend, this old castle could only be built after a woman was immured in the walls.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

When the Soviets destroyed the historic Armenian monastery they somehow left its bell tower intact.

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

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

Huge stairway leads to this massive gallery.

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

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

Men and special assistants stand by the road to sell the day's catch in this lakeside village.

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

Hidden up a dusty track off the Georgian Military Road is this fascinating waterfall with mountainous views.

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

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

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

Unusual building appears to be haphazardly built from randomly piled bricks.

The remnants of a WWI naval mine that once terrorized the country now decorates a street.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

Made of 41,900 pieces of mosaic, it took two years to piece together this giant egg.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

No matter how many times this community-run sauna gets destroyed, it always rises from the ashes.

A serpentine highway twists and turns over the treacherous Norwegian Sea.