A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

At just 51 feet and 10 inches long, it's the shortest street in England.

The bronze uniforms commemorate the vital role of women during World War II.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Western New York's largest independent bookstore doubles as a historical repository of all things Niagara Falls.

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

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

Nothing says indulgence like a 1,500-pound chocolate castle.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Dozens upon dozens of boulders engraved with scripture tell the story of one man's troubled life.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

Sail in for a ’dam good slice.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.