The unusually large seat sits atop the base of a ruined temple.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

A gleaming white and undulating tower marks the border between Georgia and Turkey.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

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

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

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

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

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

This series of Armenian caves held the oldest brain, shoe, and winery in the world.

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

The ruins of a medieval monastery built on a perilous slope.

18th century opera in its original splendor.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's deepest subway station is also a stunning ecological wonder.

It houses the remains of a 17th-century version of the Titanic.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

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

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

Home to three historic ships from the age of Vikings.