An unassuming churchyard is the resting place of a pioneering surveyor and reluctant namesake of a mountain.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

To fit bodies into this Renaissance crypt, they were first left to decompose in the crypt's rotting room.

One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

This patch of land is home to Sweden's largest burial mound, allegedly belonging to a mythical king.

A science fiction-inspired apartment building designed by a famous Spanish architect.

An architect transformed this abandoned cement factory into his castle-like workshop.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The former home of the world-famous Templeton Carpet Factory.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

Countless grotesque faces stare out from this eerie Prague art wall.

This memorial commemorates a defining 16th-century battle between English and Scottish forces.

This hidden 13th-century tavern room has a few Shakespearean connections.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The remains of a magnificent medieval fortress that was the capital of a vast empire.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

Two monstrous faces loom over a village in Czechia.

This single-track road rewards brave drivers with stunning Scottish scenery.

A crumbling hospital from the 1850s on Roosevelt Island.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

Locals affectionately dubbed this World War I memorial "Tommy."