A monument to Malchik, a stray dog who lived in a Moscow metro station until his tragic death.

The highest bridge in the world rises a dizzying 1,854 feet above the river.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

A little-known ruin with a convoluted history and a fascinating latrine drainage system.

These planks were originally installed to hold the dead.

This pair of running lions engraved on animal bone is one of the earliest artistic depictions of big cats.

At 16,627 feet above sea level, this unstaffed station is the highest in the world.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

This abandoned Slovenian military barracks has become a punky-political art squat.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This one-time health resort was used by aristocrats around the world.

This massive subterranean fissure is known as the "underground Grand Canyon."

The world's largest bamboo labyrinth is a living demonstration of the plant’s immense potential.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

This unique temple complex remains off the typical tourist trail.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.