The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Abandoned railway line circling the city of Paris.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A church of bones, decorated with 40,000 human skeletons.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

France's most famous cemetery, with some of its most curious tombs.

The world's only museum devoted to the wonders of fluorescence.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Dramatic river bend surrounds a natural red-rocked pedestal.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

These fantastically named natural pools look like something out of a Scottish myth.

A snapshot of the city's fascinating voodoo culture.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

On Japan's Tashirojima Island, cats are king.