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

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

An underwater restaurant, surrounded by a coral reef.

Where Mary Shelley’s "Frankenstein" and John William Polidori's "The Vampyre" were born.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

These magnificent 240-year-old machines are considered distant ancestors of the computer.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

A kaleidoscopic warehouse-maze of handmade neon signs.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A comic book store that puts the marvel back in marvellous.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Rebuilt remains of a temple to Roman god Mithras.

A particularly disconcerting tribute to Irish martyrs.

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.