Visited here last month with a Tony Sweet Workshop. We spent most of the day one Saturday here. ESP is another HDR shooters paradise offering hundreds of decayed cells capture, including Al Capone's nicely furnished cell. ESP closed in 1974 as a prison and the rapid amount of decay is astonishing. In the mid 1990's it opened again as a tourist attraction. Work is underway to stabilize the massive prison complex from further decay. Our group paid to get into areas still closed to the public.