The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Art and armour fill every inch of this rich kid's Italian villa.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Over a million items cram the shelves at Africa's largest shop of used and rare books.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

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

A curious collection of mechanical moving figures.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

A glacial pothole was once a hideout for a notorious Scottish outlaw.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

A Scottish manor with a history of mysterious fires, magic, and eccentric tales

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This Scottish bridge seems to compel dogs to leap to their death.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.