I was inspired by
this blog about California City.
There's a city in the Mojave Desert called California City, CA, incorporated in 1965. Real estate developer Nat Mendelsohn purchased 320 square kilometers* in 1958, envisioning a city that would one day rival Los Angeles. He was wrong, of course.
*The city now has a total area of 527 square km.The city is the third largest city in CA by land area, but only has 8,000 people in it. For comparison, Rockville, MD has 60,000 people in it.
The downtown area sits around a central park with an artificial lake and looks relatively normal:
Warning: many embedded Google Maps lie beyond!