In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

An ancient Egyptian temple in the middle of Madrid, Spain.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This French "sea of rocks" is packed with stunning rock formations and its own medieval castle.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

This haunting stone chasm is a hotbed of mossy rock and English legend.

The heads of two giant mythological water horses honor Scotland's horselord past.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.