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

"The most colorful grottoes of the world.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The history and future of cannabis.

A small but immensely extravagant palace built by the "Night King."

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A winding, blood-red tunnel of hardened lava navigable by foot.

One of Japan's most famous sights, the bridge was originally built in 1673.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

This modern monument to pagan belief looks like it was transported straight from ancient times.

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

An isolated dive site teeming with cnidarians.

Museum about life, death, and cannibalism in the Stone Age.

The best Tiki bar in Las Vegas.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

A subterranean playground in an abandoned slate mine.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.