The Visitor's Center is located at 1045 S. 4th street, Forest City, Iowa 50436
I pulled in late one night with a Winnebago service appointment scheduled for the following morning. There are 30 and 50 amp connections and free wireless internet that was plenty fast to stream Netflix through my Apple TV. No other amenities (it's the parking lot for the Winnebago Visitor Center). A large sign advises everyone that you must be a WIT member to stay overnight, but no one checked in on me during my short stay (I had a camping pass that Winnebago emailed me before my service appointment).
Several flat sites in parking lot. Several uneven sites in the trees next to parking lot. All have electric. Convenient and better than WIT fair grounds about 25 sites on a gravel lot "A row". But fair grounds have dump sites and a water hook up near the large red barn.