This lava tube cave was once a Cold War fallout shelter.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

Latvia’s first skyscraper, nicknamed ‘Stalin’s birthday cake.’

Walls of VHS tapes adorn this Golden Gai B horror movie themed bar.

The place nearest Seoul where it’s easy to get a good look at North Korea.

Stretching for 22 miles, the world's longest tree-lined avenue dates back to the early 17th-century.

On the outside of the Mersey Tunnels, an Art Deco sculpture of an Egyptian Pharaoh wears goggles and racing gear.

Both Catholic and Protestant graves dot this 17th-century burial ground.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

Rows of stone statues are dressed up to mourn children that are lost before birth.

Starship-temple contains 400 tons of drinking water and offers free Japanese lessons.

These statues are dedicated to the damned souls of those executed centuries ago on the beautiful Yuigahama beach.

This frenetic mural recalls an annual festival that once took the city by storm.

Associated with Japanese folklore's most eminent sorcerer, this slab of rock is said to be both a blessing and a curse.

This unassuming tunnel’s name recalls a storied "cat pond" that has now been lost.

Feast your eyes on the centuries-old statues of the judges of hell.

The alleged site of the months-long imprisonment of a Japanese prince.

This mysterious medieval grotto holds a grid of sacred wells of unknown purpose.

Narrow passes cut out of mountains surround the medieval capital of Japan.

Open since 1690, this former teahouse makes “strength mochi” based on the centuries-old recipe.

An eerie cluster of medieval cave-like tombs carved out of a cliff, hidden in a historic mountain pass.

It is said that coins washed in the waters here will miraculously multiply.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

These sculptures were created by a 17th-century artist who had never seen an elephant.