Speaking of old jails you can also visit, there is also Eastern State Penitentiary is in Philadelphia proper!
It’s definitely worth checking out. You can take an audio tour where they talk about the isolation cells. And there’s also a gay steam room where apparently lots of male-on-male prison sex took place!
This is a historic prison — arguably just as significant to the history of incarceration as Alcatraz.
You can visit Eastern State Penitentiary in Philadelphia. The self-guided audio tour is very informative. You can even learn about how inmates had sex behind bars!
Official website here