This is a very nice walk through the desert experience. It is strictly walk through, but you can experience the whole thing in a couple of hours. The walking is easy with nicely maintained paths.
Intermixed with walking through the desert plant life are exhibits of live animals who actually live within the desert environment. Of course, you can also see some wild wildlife roaming free as this is just an area within the real desert.
There is a small mine exhibit, easy to walk through with cased exhibits of the various gems and semi-precious stones that are actually mined in the desert area. At the exit from the mine exhibit is an area of small rocks which the museum seeds with small semi-precious stones for you to search for and they let each person keep a couple of the stones they find. This is fun for the kids who generally like to look for such things.
Lots of docents are within the grounds to explain things and answer questions. They day we were there one docent had a screech owl out where you could really get an up close and personal look at it, plus learn about it from the docent.
A nice job of labeling the plant life throughout the museum, although you have to remember the names as they just label some so that at some point you can find the name of any plant you see.
Go early in the day before it becomes too hot as there is no shade as you walk through the museum, and as the day heats up it can get very hot. We went in late October and were there at opening time. It was very pleasant. At that time of year, the afternoon highs appear to get into the 70's so that even afternoons would probably not be too bad, unless you're subject to sunburning very easily.