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

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

Locals believe this abandoned ruin on the outskirts of Bucharest is haunted.

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

This museum offers a journey back to the Belle Epoque era of Romania.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

This eccentric folly house was designed by Romanian thinker Bogdan-Petriceicu Hasdeu, with a helping hand from his deceased daughter's spirit.

Gigantic Romanian salt mines used to heal respiratory conditions.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

The romantic botanic tunnel feels like a well-kept secret.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

Eighty million natural history specimens call this gargantuan museum home.

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

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

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

A unique interactive experience of everyday life in communist Yugoslavia—a very different time in Croatian history.

This 15th-century church houses priceless works of art from a range of Croatian artists.

Inside this mansion turned museum, the works of prominent Croatian artists are on full display.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.