This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

Magical-looking cottages that inspired one of the most famous animated films ever.

The private clubhouse for the members of the Academy of Magical Arts.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Resting place of Hollywood's immortals is also site of summer film screenings.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

America's most famous piece of self-built architecture.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Cat art as far as the eye can see.

A museum of carnival attractions where you are invited to ride the rides.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

Elevated freight railway turned wildly successful urban park.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This Parisian café sticks almost exclusively to an ethos of reuse.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Explore nearly 400 years of English middle-class home life.