Seaside ruins of a settlement that date back to the first century B.C.

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

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

This abandoned five-star hotel is now a five-star urban exploration destination.

An alchemist's "magic door" stands in the middle of a Roman park.

A modern sliver of architecture in Roma.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.