The World Famous Coachella Valley.

Comprised of Palm Springs, Palm Desert, La Quinta, Indian Wells, Indio, Cathedral City, and Rancho Mirage, the Coachella Valley Is
One of the Most Popular Vacation Destinations in the United States.
Come See Why!

Link to Map Quest

The Locals simply call it the "theValley".  People from Southern California call it "the Desert" because they have their own "Valley".
Either way; the Valley, the Desert, it won't matter once you're here, you'll feel right at home.