The self-mummified monks of Japan.

This elegant arc of a waterfall marks a religious turning point.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

100-year-old shipwreck you can walk up to at low tide.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

An eerie, decaying ghost town destined to fade into the forest.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Nikola Tesla's former home contains an homage hidden from plain sight.

These azure waters were thought to lead to the Mayan Underworld.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

The drama of nature in full effect in this Nevada State Park.

This mesmerizingly colorful pond looks like a scene straight out of a fairytale.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.