A tiny replica of the iconic London landmark hides on the side of the steel structure.

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

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

Try not to get slimed in Tribeca.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

The colorful stairs are made with marble from the world's major quarries.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

Scotland's only funicular railway is also the United Kingdom's highest.

Early Medieval stones sit on display at the beautiful Govan Old Church in Glasgow.

The most loyal of little dogs, or a Victorian era publicity stunt?

Britain's only herd of free-ranging reindeer.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A book bound in the skin of an infamous criminal, along with countless other specimens.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The massive machine creates cracking displays of indoor lightning.

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

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

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

Alien rock formations grown from the sands of an Australian national park.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.