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

This active volcano's siren song to suicide jumpers forced authorities to build a fence.

Buddhist university that allows English-language speakers the opportunity to study with monks in Thailand.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

One part local history, 99 parts gruesome haunted house.

Follow the original medieval paths that wind through this intriguing section of the city.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

England's most notorious suicide spot.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The largest greenhouse in the world is home to over one million types of plants.

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A fantastic castle rumored to be the birthplace of King Arthur.

Famously misunderstood wonder of the ancient world

The history and future of cannabis.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

A curious collection dedicated to human and animal anatomy and pathology.