Boggo Road Gaol. Opened 1883. Closed 1989. Spookiness factor? On a scale of 1 to 10 I put it at being-married-to-OJ-Simpson.
Picture taken at midnight. Blurry as I did not stop for long because I was the only person around, it was quiet, and I kept trying to not look at the windows in case I saw a face or something spooky.