Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

A fernery hidden by neglect is uncovered, and an ancient specimen along with it.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

This grave resides at the crossroad of three parishes.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

Over 12,000 hygiene oriented objects and exhibits.

Iceland's first pagan temple in 1,000 years is underway in Reykjavík.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

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

This antique rail car has been reborn as an urban cafe.

In this mine all the gold you can carry may not be as sweet of a deal as it sounds.

An Inca spa, military outpost or maybe… both?

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

The large collection of pre-Columbian pottery might make you blush.

A mysterious pre-Incan ruin believed to have miraculous healing powers.

Death rituals and sacrifice inside a Peruvian megalith.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.