A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

A salty cave excavated by elephants and the location of a deadly disease vector.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A harrowing trail up a mile-high mountain.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.