Here are some additional pictures from Eastern State Penitentiary, courtesy of Metalbond reader Louis:

You can see MANY more pictures of Eastern State by clicking on the links below:

https://louis-sj.tumblr.com/post/190219984707/eastern-state-penitentiary

https://en.wikipedia.org/wiki/Eastern_State_Penitentiary

https://www.easternstate.org/

https://goo.gl/maps/R52K5i8ueZF7s9iAA

And a couple more links:

https://en.wikipedia.org/wiki/Holmesburg_Prison

https://whyy.org/articles/7-movies-shot-inside-philly-prisons/

Thanks, Louis, for sharing all of this!