This 1920s Dutch barge is now a floating bookstore.

This series of Scottish caves has no clear purpose other than baffling historians.

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

Northern Ireland's Brobdingnagian stepping stones.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Famously misunderstood wonder of the ancient world

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

The world's largest collection of witchcraft regalia.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A 30-acre garden inspired by the principles of modern physics.

Banksy gives themself artistic license with this piece of London street art.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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.

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

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

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This Ukraine alleyway has become its own little island of forgotten things.

Like something out of a bad acid trip, this Ukraine hallway has been covered in hallucinatory phantasmagoria.

An artful memorial to 4,000 fateful oranges.

Welcome to the world's only museum dedicated to the Ukranian Easter egg.

When you've got to go, you've got to go.