This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

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

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

This industrial chimney looks rather out of place, isolated in the middle of an attractive woodland.

Some of England's last cave dwellers lived and worked within this huge cave.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.

Follow the original medieval paths that wind through this intriguing section of the city.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A 17th-century church is nestled within the walls of a 15th-century ruin.

A village on the east coast of England that has almost completely eroded into the North Sea.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

A sweet symbol marks the place where torturous executions were once carried out.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Giant naked man on a hillside.

Fascinating town where normal life interfaces with the occult.

A student driver's nightmare.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.