Buttercup Valley is in Imperial County, California. The motels that the cast and crew stayed in were in Yuma, Arizona.
TRAVEL GUIDE 23 4 8 Filmed at 23 locations Across 4 continents Creating 8 unique planets Let's face it; since most of us were kids, we've wanted to visit the Star Wars galaxy. Although we haven t yet achieved hyperspace travel,you can still visit the galaxy’s most iconi« locations here on Earth... / Star Wars :: infographics :: movie :: tv :: locations
I bet nowadays is much more "easy" with all of the CG technology... You can model everything that will look realistic(even people).