A close look reveals that the Scottish monument is just slightly off-kilter.

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

The solitary cairn marks a mysterious death that's still controversial more than two decades later.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

A kaleidoscopic warehouse-maze of handmade neon signs.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

Taxidermied animals galore, by appointment only.

This life-size monument honors the legacy of a famous literary feline.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

The real clothing store that inspired a fictional spy organization's front.

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

A sculpture of a famous ape who was once a beloved household name in London.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Home to one of the tallest church spires in Europe, this historic church once played host to King Henry VIII and Anne Boleyn.

This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

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

A unique tribute to the millions of animals who served and died for the British military.

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

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

This studio was home to David Bowie's first single, even if it did turn away the Beatles.