I second that...The Ohio State Parks put on a great program for the Halloween weekends in Oct. Many of them have it for 2 weekends.
This year we are doing West Branch SP. in Northern Ohio. People go all out in doing up displays on their sites. At WB there is a 1/2 mile long haunted trail local acting clubs put on. There is T-or Treating, pumpkin carving.....
The last 7 or 8 years we have done Mohican
08', West Branch
07', West Branch
10' You can see by the pictures....a lot of time is spent doing up their sites. I always do a graveyard set-up....
Try this link to Ohio State parks " Calender of Events
" Go to Oct to search the Halloween weekends