A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

This once-derelict building is now one of the most beautiful bookstores in the world.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Modern megaliths form this work of cosmic, Celtic landscape art.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

Human-made caves excavated to hide a secret society of wealthy pagans.

This giant wooden treehouse within a sprawling garden has its own eatery.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

Stonehenge has nothing on Castlerigg’s views.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

This crumbling folly looks like an enchanted left over from Middle Earth.