I went there about 3 years ago, as a friend of mine lives at the Gallery. the place is spectacular. At the time, there was one course, and it was excellent. It had a nice mix of long and short holes, including a 725 yard (yes 725) par five, from the back tees. From the next set of tees, which I played, it was a mere 609! The views were stunning, and the holes seems to wind through mountains covered with Saugaro cactus plants.
Since then, another course has been built, the South Course. It will host the upcoming WGC Accenture Matchplay Championship.
For more info:
http://www.gallerygolf.com/