The super-massive Fifth Avenue flagship store—comprising the newest "planet" in Diesel's retail solar system—has nearly 20,000 feet of floor space on three levels. Here you'll find the latest fashions—all of them, in fact—from the lo-fi favorite in this über-cool building that was formerly the home of Gucci.

What's different here? You can personalize your waistband; you can enjoy photographing mirrors that allow you to see 360 degrees of fit; you can even enjoy same-day tailoring of your purchases! What's more, there are online shopping stations to virtualize your physical shopping experience.