The garden is arranged into several smaller sub-gardens, some arranged by theme (e.g. undersea; children's; landscape for fire safety) and others arranged by region (e.g., Australian; Mexican; Canary Islands). Here are some pics I took in particular gardens.
Succulent Display Garden
My only complaint was that so many of their plants weren't identified (and I detected only the scantest correlation between a plant's rarity and its likelihood of bearing a label). So while you can come here to see a lot of plants, I think the best way to enjoy this garden is just to enjoy the beautiful displays of color, light, and shape without worrying too much about what's what. All, in all, though--definitely worth a visit.