A medieval setting reimagined into a unique art alley.

Not far from a popular beach, an unfinished, abandoned mansion for Bulgaria's last communist dictator.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

This unique structure allowed boats to bypass underwater mine barriers in the channel to enter the harbor.

An exotic jungle hideaway run entirely by indigenous Kichwa women.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

The ruins of a world-renowned medieval hospital.

This futuristic building is yet another architectural wonder in Dubai.

Smoked mummies housed in mountainside caves.

Built by an accountant with a dream of running a grand resort, this estate has sat vacant for over half a century.

Five painted skeletons are hiding behind a church in this tiny village in the Italian Alps.

A dark, narrow tunnel that leads to a charming lake and waterfall.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

This small stone hut was once home to a gold prospector and his family.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

Built in the early 70s, the ruins of dinosaurs are all that remains of a man’s dream to build a free dinosaur themed mini golf course

The site of an early Arthurian battle and the dwelling-place of prehistoric people and (possibly) an ancient race of giants.

Across from a hotel parking lot, a Confederate spy rests under a large tombstone with her Union Veteran husband behind a copse of trees in a small, well-maintained cemetery.

Structure built from the skulls of vanquished foes.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.