The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Go inside to really appreciate this 500-year-old technological masterpiece.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Thousands of well-dressed mummies below a monastery.

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

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Peeing dogs guard the Roman hunting goddess atop a fountain at France’s Château de Fontainebleau.

A French artist's vague warning hangs over Belleville.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This bridge was constructed from the rubble of the infamous Bastille.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The first green space constructed on an elevated viaduct.

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

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.