A city of 15 million, complete with a 1,000-foot-tall domed hall and a boulevard larger than Champs-Élysées. Hitler believed this would cement Germany’s dominance for a thousand years.

The Hitler Youth had existed since 1926 ... The so-called Zazous proliferated on Paris’s iconic Champs-Élysées, where they smoked Lucky Strike cigarettes and partied to swing jazz.

Musician Joe Dassin once sang "Il y a tout ce que vous voulez aux Champs-Élysées," which translates to "There's everything you could want along the Champs-Élysées." And he's right. Paris' most ...