Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

Twelve natural mummies are displayed in the crypt of this former monastery school.

A church dedicated to the Mexican skeleton saint.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Part bookstore, part café, and part forest.

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

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A burial vault located under Tiber Island in the middle of the Italian capital.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Home of an evil witch famous within southern folklore.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

Along the side of the road on a small Japanese island is an extensive garden of uniquely designed Shisa statues.

These caves secretly held national treasures during World War II.

A Byzantine-era church hidden in a wooded area below the Acropolis.