The canine-themed book collection claims to be Europe's largest dog library.

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

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

A statue of the original Pearly King is hidden in a church's crypt.

Hidden beneath the streets of London is a secret subway that only carried mail.

This luxury shopping lane has been protected by its own tiny police force for over a century.

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

A cluttered and astounding collection of antiquities and curiosities.

The anatomical-pathological collection of a man who changed surgery.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

One thousand trees were planted in Norway to be used to print books a century from now.

A small collection of magic tricks and memorabilia is now an apartment-sized museum.

A friendly pub with a sordid past in cock fighting.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

A student driver's nightmare.

A tongue-in-cheek arcade where the games are based on everyday life.

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

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