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

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A former ironworks that was the first UNESCO industrial site.

Hundreds of tiny dead butterfly eyes gaze down at diners in this Australian eatery.

When you get to Magnetic Hill park near the sign, put your vehicle in neutral gear, and watch it roll uphill...

An opal mining town in the middle of Australia where people live, worship, and shop underground.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

The oldest Roman lighthouse still in use.

Giant granite sculptures representing family on the northern coast of Spain.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This huge metal monument is slowly being stripped to its concrete skeleton.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

A submerged village appears when dam levels drop.

Spain's stunning solar energy plant.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A small Portuguese cottage formed between boulders in the countryside.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Picturesque intersection of witchcraft and ancient Christianity.