This black church sits alone among a field of lava rock.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

A sulfuric martian landscape that looks far better than it smells.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The mummified relics of an American missionary.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

Fantastic collection celebrating the final send-off.

Yo, Adrian!

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Europe’s oldest natural human mummy.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

The mystic whose incorrupt corpse still attracts the faithful.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Once housing children next to hardened criminals this historic jail once displayed Ned Kelly's skull until it was stolen.

This park contains a number of standing stones meant to heal and inspire.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."