The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A cannonball from Union forces battling John Hunt Morgan made this church a permanent home.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

A tunnel with windows, so you don't miss out on the impressive views.

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

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

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.

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

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

Pirates had to be ousted from the land where this now ruined Louisiana fortress was built.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.