Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

Museum about life, death, and cannibalism in the Stone Age.

World's largest cave was only discovered in 1991, and now offers tours to the public.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

This small chapel is built of human bones and decorated with a golden skeleton.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Japan's corrupt-mental-institution themed restaurant offers diners a chance to eat inside of filthy cells.

A taste of the macabre Tokyo's ritzy shopping district.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

Occult books, tarot, oddities.

An ancient city exhumed from the depths of the ocean.

A strange aquarium with stuffed fish, and almost no water for them to swim in.

An endless sea of white conical domes.

A massive work of modern art that appears to be a crop circle in the middle of the desert.