Scattered throughout London are ancient remnants of the city's former bounding wall.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Pop culture has helped to keep this iconic British building from being destroyed.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Rebuilt remains of a temple to Roman god Mithras.

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

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

This striking statue brings a scene from the African savannah into central London.

This London marker celebrates the spot where the world-famous English band was founded.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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

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

The medieval woodcut-style artwork chronicles life in medieval London.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

The celebrated eyesore created by starry-eyed sweethearts.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.