This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

An architectural oddity hides in plain sight on this iconic London bridge.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

London's smallest police station is barely the size of a phone booth.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The seat of Buffalo government is a gorgeous Art Deco palace.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The Boston square dedicated to the dark poet who was born nearby.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

A mysterious echo seems to defy the laws of acoustics.

This historic church with a connection to "Uncle Sam" is now a fraternity house.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.