Constructed thousands of years ago, these stone circles offer incredible insight into the lives of the people who built them.

A strange tribute to all the fallen souls of war.

Modern Japanese museum is buried by snow annually.

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

Be a ninja - or just act like one.

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

A tiny cafe that recreates the Japanese elementary school lunch experience.

Peace Park and the Atomic Bomb Dome.

A massive cave complex boasts some of the clearest water (and most charming bats) in the world.

Nine Gardens in one—with tea service.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

Japanese island famous for poison gas and fluffy bunnies.

The magical, mossy forest that inspired 'Princess Mononoke.'

Once the most densely populated place in the world, this island is now a ghost town.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

A beautiful display of nearly 50 bells crafted with a unique design and distinct sound.

These 13th century documents come housed in 18th century shelves organized by a 19th century historian.

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

This hidden art nouveau gem was designed by an architect in search of a national style.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.