An open cell block door invites visitors to start their exploration of Eastern State Penitentiary.  The prison was built in 1829 and closed in 1971.  It is located on Fairmont Avenue in Philadelphia, Pennsylvania.  

Technical details:
Sakai Toyo 5x7" large format metal field camera with 4x5" film back.
150mm Caltar-S II F 5.6 lens in Copal BT shutter.
Ilford FP4+ B&W film, shot at ISO 125.
Exposure was 1/15th second at F16.
Developed in Rodinal/Adox Adonal 1:50 dilution for 15 minutes @ 20 degrees Celsius in Mod54 daylight developing tank.
4x5" negative scanned with Epson V600.