Giant City is a great place to go with your family! The trails are fun and interesting while the lodge is fantastic! Amazing food there! The scenery is beautiful and the lookout tower gives amazing views!
There are currently 25 equestrian camp sites in this park in a different area than the normal RV and Tent campground. The campground is being upgraded this year in which I belive they are adding 50 amp full service to many of the electric only sites. There is currently walk in only unless you are reserving a horse camp. There are fantastic hiking trails and equestrian trails here and you would think you are in the mountains here. The geology is much like the Missouri area near the other bank of the Mississippi river. I have tent camped here and camped in a pop-up camper in the fall both times. Hiking is the best activity here unless you ride horses and that is great here too. This one and Wolf Creek on Lake Shelbyville are the best parks in Illinois for horse trails.
Camped here for a weekend and was not disappointed! There are multiple easy to get to "primitive" campsites for tent camping but all are within an easy walk of the outhouse, water hydrant, and parking lot. There are several easy hikes within a short drive to other areas of the park. The park also has a 6 mile hike-in campsite for backpacking and a lot of electrical hookups for RV camping. The trails are over cliffs and through gorgeous boulders.
Campground here has both electric sites for campers and primitive sites for tents. All are shaded and quiet. Showers/bathrooms are really nice and clean. In addition to campgrounds, there's a very nice lodge with a good restaurant, and the cabins here are pretty good too.
Lots of amazing, beautiful hikes in this park, especially if you're into bluffs and large boulders. Easy drive to many other picturesque and unique parks (i.e. Garden of the Gods, Ferne Clyffe), and easy drive into town if you want something more civilized.
Kind of a bare bones campground but this state park does offer rock climbing (if you have the expertise and your own gear). A few picnic shelters and an amazing CCC lodge that has a cabin rentals and a pretty good area restaurant. The park used to have an interp center but I believe the state closed it do to funding. The trails aren't always maintained it definitely depends on the season but the park itself is not to be missed.
There's about 80 total sites, ranging from electrical hookups to primitive (there's about 15 of these). You can reserve, or walk-in. I went in October and didn't need a reservation. I also chose primitive. Showers and bathrooms are available to all, and sites have fire pits. You're most likely looking for a camp + hike adventure, and there's a trailhead for Red Cedar Trail off the site grounds. It's about 6 miles in a large loop, with one stop along it taking you to a primitive Red Cedar Campground, which is like a bunch of old tee pee looking structures. 3 stars because although this hiking is beautiful in the fall and the amenities are decent, the trail itself is tricky. It does have markings, which keep you on the trail, but there's no way of knowing how far along the hike you are, or how long the hike even is (I learned later it was 6 miles from the website). It would be nice to see sign posts or mile markers to give you some idea how your hiking pace is. It's a great place with the fall colors to go and explore, but plan your hike with enough time to not get caught in the lower amount of daylight. Hike is about 2-4 hours, depending on your pace. I suggest photos of the trailhead signs before you set out.