The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

This ordinary street was made infamous by a legendary visit from the devil.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

Nestled in an unassuming residential area, this "forbidden forest" is rumored to spirit away those who dare to enter.

This house covered in art created with volcanic rocks is shrouded in macabre lore.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

Though an earthquake destroyed this village in 1980, one former resident still walks its streets every day.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

An unassuming secret door once led to a legendary watering hole.