At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

The largest catacomb system in the world.

Restaurant in a 1741 farmhouse that touts the story of its haunting on its menus.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

Plot your trip through the city on the sidewalk.

Continuing the tradition of the dime museum in style.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The largest underground church in Europe.

Hunt for buried treasure in Nova Scotia.

An island made out of shells, including a cemetery.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Largest cave system in Africa.

One of the largest Roman settlements in Portugal.