This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

This riverside restaurant delivers elegant dining in a historic 1901 train depot. 

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

Its original statue was deemed so ugly, locals called it “Scary Lucy.”

This manor in the woods memorializes one of the greatest birders of a generation.

This museum is dedicated to a Hollywood icon.

This institution pays tribute to an associate justice who protected civil rights and prosecuted Nazis.

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.