This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The magical, mossy forest that inspired Princess Mononoke.

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

360° views of the city plus five floors of optical illusions and hands-on science.

Northern Ireland's Brobdingnagian stepping stones.

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

A slice of central Asia in the middle of Berlin.

The atmospheric road was never meant to be so creepy.

Macabre astrological automaton clock dating to the late 1400s.

Stroll through a wonderland of stupendous moss-covered trees.

Staves, storm-calling, and of course, necropants.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A semi-scholarly approach to sex.

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

This South London cemetery holds the remains of more than 15,000 people.

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

The world's largest collection of witchcraft regalia.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Elevated freight railway turned wildly successful urban park.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

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

Notorious artist squat renovated into legal studios.

The only structure left with direct ties to the Salem witchcraft trials of 1692.