Death rituals and sacrifice inside a Peruvian megalith.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Topless shrine of northern Ghana.

A small museum full of giant effigies of Bali's demons and monsters.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

These azure waters were thought to lead to the Mayan Underworld.

Striking occult iconography on a medieval German church.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

The Voodoo Superstore of the world.

Famously misunderstood wonder of the ancient world

A shrine of fire worship built on top of a natural flame.

Festival of Perpetual Life and Rebirth.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

The mosaic floor of a 4th-century synagogue features a pagan zodiac wheel alongside traditional images of a Torah ark and menorahs.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

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

A snapshot of the city's fascinating voodoo culture.

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

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

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.

Dozens of snakes are housed and worshipped within the walls of this Vodun temple.