The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

Pennsylvanian mass grave and possibly mass murder.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The rusting remains of the largest assembled WWII fleet on the West Coast.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

Wars fought and wars won are remembered by these abandoned bunker ruins.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Art deco landmark on the outskirts of Washington, D.C.

The United States Capitol's former columns still stand.

This abandoned sea fort has become an accidental bird sanctuary.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

What looks like a link in Gondor's early warning system is actually a centuries-old Italian fortress.

A museum dedicated to exhibiting remarkable outsider art.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

The library of every book lover's dreams.

Believed to have once stored either human remains or rice wine, thousands of mysterious stone jars lie in ruin.