This series of Scottish caves has no clear purpose other than baffling historians.

An ancient stone with mysterious origins stands in a residential neighborhood.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

The geoglyph once sported a glass bottle eye.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

The only pub in the world surrounded by an ancient stone circle.

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

This natural spring not only claims to heal the wounded but it has also been willed to God.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

A spirited shopping experience.

What started as three small gnomes at the base of a tree has grown into a full-blown gnome home.

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.