The views, wildlife, and geology in the park are astounding---add to that the yellow aspens in the fall and you have classic Colorado camping not far from Denver. There are a lot of different options: typical state park camp sites, cabins, and a yurt, as well as backpacking/backcountry sites. We did the yurt in the winter and it was amazing, but make sure you have a jeep (or similar) and bring everything you need.