Society of the Supernatural did an investigation of the haunted Kosciusko jail in Warsaw, Indiana at the end of October. The site is very active with shadow figures, full body apparitions and more. There's also a "whistler" who's heard frequently in the historic building.
The jail was built in 1870 and remained in use until 1982. It's an imposing structure with a castle like appearance. Check out some of the first night of our investigation below: