A 16th-century horror show built in a lovely Italian garden.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A submerged archeological park still holds the wonders of a Roman Sodom.

Architectureal fantasy quarter of Rome.

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

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Established over a thousand years ago, this family-run teahouse continues to serve skewers of sweet rice cake to this day.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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

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

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

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

The first green space constructed on an elevated viaduct.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A subterranean shelter remains intact under a busy Paris railway station.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.