This former insane asylum now holds a pathological anatomy museum.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

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

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

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

Cavernous opening completely encased in Karst limestone.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Nature took her revenge on the "Wickedest City in the World."

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

George Martin's Caribbean recording studio now rots within the shadow of an active volcano.

Looking like nothing more than a cartoon deserted island, this tiny sandbar is home only to a single umbrella.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

This sawtooth mountain range still bears the strangely lovely marks of its history as a medieval quarry.

An astounding annual light display honors the victims of one of Japan's most devastating earthquakes.

Japan's largest area of "pink moss" turns the hillside bright pink every spring.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

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

A real-life replica of a home from Hayao Miyazaki's beloved movie "My Neighbor Totoro."

Unusual hexagonal rocks formed by cooling lava named for their resemblance to traditional Japanese tatami mats.

The world's largest drain sits below the city of Kasukabe, Japan.