Natural cathedral designed by Italian artist Giuliano Mauri.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

A humid oasis combines recreation with exploration in a unique underwater cavern.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

Where manatees are the snowbird vacationers in these balmy Florida springs.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

A haunted hill that supposedly defied gravity.

The largest volcanic caldera in Japan holds an entire city in its maw.

Shells collected from over a hundred different countries line the walls, floors and ceilings of this fantasy museum.

Children's literature inside, forest all around.

A calico cat named Tama was the wildly popular Super Station Master at this train stop in southeast Japan.

We heard you like volcanoes so we put a volcano in your volcano so you can die for sure...

Sulphuric gases inhabit a beautiful Japanese island.

Historical Japanese-Dutch relations are honored with haunted rides and flower fields in this replica town.

Largest graveyard in all of Japan surrounds a famous mausoleum.

An unlikely hit, this museum is dedicated to the inventor of instant ramen and cup noodles.

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

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

Be a ninja - or just act like one.

Serving you alcohol with a side of insanity. Also, costumes!

The Buddhist temples of Yamadera, built into a mountain side, feature a viewing deck with sweeping views.

This pair of small sea rocks has been "wed" using rope and ancient Shinto tradition.

Abandoned Japanese ghost town gives a glimpse into what our own metropolises may leave behind.

Not quite the menace it once was, this monster still has some chops.