Cherry blossom season comes early in this Japanese town where pink flowers line the streets and riverbanks.

This subterranean spot might be the epitome of Japan's baroque, retro coffee houses.

A Japanese cat island also populated by the descendants of a band of banished samurai.

Steaming blood-red hot spring from hell.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

An ordinary pond with fish from out of this world.

Go through the looking glass in Tokyo's Wonderland-themed shop.

Japanese island famous for poison gas and fluffy bunnies.

A 20-meter (65-foot) robot towers over Tokyo Bay.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

This 11th-century Greek monastery has renowned mosaics and relics of a brutal past.

These caves secretly held national treasures during World War II.

This small chapel holds the mummified heart of one of the heroes of the Greek Revolution.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

Only open for two days a year, this church links ancient Greek and modern Christian celebrations.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

The abandoned summer estate of the former Greek Royal Family.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

This medieval "painted village" is famous for its geometric facades.

Poseidon? No one seems to know.

Seventeen oak trees sprout from the roof and walls of this tiny chapel without any visual evidence of roots.