The first declared National Monument in the United States.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Two thousand artifacts from around the world collected by one woman who loved to travel.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

The legendary building that needed ghostly approval before being built.

This was once the center of the Birdman cult, and is now a World Heritage Site.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

A century-old network of freight tunnels underneath the city's historic business district.

Where Cusack's record store from the film "High Fidelity" was located.

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

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

An antique curios dealer and hybrid taxidermist.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The narrowest street in Paris.

The first green space constructed on an elevated viaduct.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

France's national museum of scientific and industrial instruments.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The idyllic island where the philosopher Jean-Jacques Rousseau spent “the happiest time of his life.”

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