I didn't realize how much I miss visiting Nevada until I got to spend some time at the Highland Park Conservancy a few weeks ago. We were there for a wedding in the greenhouse and it was just beautiful. They had sections for different species of plants and the largest one was devoted to the cactus.
Some of these plants were huge - taller than the little man. We spent a great deal of time in this area since it was just so amazing, and because the wedding was taking place on the wooden bridge over the turtle pond in an adjoining section. I had to keep both kids corralled until the ceremony was over.