Home to the "Sky Islands" - mountaintops high enough to catch the rain, islands of woodland surrounded by the Sonoran desert below.
The information you need to somewhere worth visiting. Please bring food that doesn't need to be cooked if you do come to camp, and leave the campfires at home. Wildfires are no small matter in this area; one of them wiped the town of Summerhaven off the face of the earth earlier in this decade.
Nature's hidden passages. Guide to finding these places. Attractive photography of places that sound like they'd be a challenge to visit. Be sure to read the guide carefully before you go, to know what you're getting yourself in for.
The interests are going to be a little safe and tame, because this is a city government run site, but this is a decent place for first time visitors to Chicago to visit so they don't later end up saying things like "You mean there's an art museum in the Loop? How good is it?"