In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

This tangled English forest looks like something right out of a fairytale.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A student driver's nightmare.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Banksy gives themself artistic license with this piece of London street art.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

A statue representing a lost Roman profession that was vandalized for centuries.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

This ancient Roman arch misled treasure hunters for centuries.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

One of only two commuter aerial tramways in the United States.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

In Egypt's expanding metro area, many of the neighbors are dead.

This hidden green space is the city's second largest conservatory.