This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

Temple complex that once housed the famous statue of Nike.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

A deadly ancient portal to the underworld.

Hideout of thieves, monks, and goat-footed gods.

Giant marble phalluses on the sacred island of antiquity.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

Fascinating town where normal life interfaces with the occult.

A temple devoted to inner esoteric mysteries located in a California commercial strip.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Town of spiritualists and mediums in Florida.

The 14th-century ruins are said to contain healing powers.

The fountain marks the area where hundreds of accused witches were burned at the stake.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

A pagan tradition of draping trees with rags eerily lives on.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

The hidden lair of an alchemist rediscovered in a 2002 flood.

The world's largest collection of witchcraft regalia.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

Ancient Greek oracle of the dead.

The hallucinogenic center of the ancient world.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.