The "SHU" is not much larger than a good-size bathroom. The special housing unit, was where Johnny Perez spent a total of three out of 13 years in solitary confinement.
They're small spaces -- sometimes 7 feet wide, 12 feet long. And they're where some inmates are held, sometimes for days, sometimes for decades.
Religious leaders across the country are speaking out against solitary confinement cells that they say should never be used by juveniles or the mentally ill and rarely by the general prison population.
The debate is taking on new resonance as a Boston jury weighs the death penalty -- or a life sentence with 23 hours a day in solitary confinement -- for Dzhokhar Tsarnaev, the convicted Boston Marathon bomber.
This week, I was on a panel about solitary confinement at the "Architecture for Social Justice" national conference. The conference was for Academy of Architecture for Justice, the subgroup of the American Institute of Architects that designs courthouses, jails, prisons, police headquarters, etc.
The Tamms Year Ten campaign, which lobbies for reform for solitary confinement, decided to do what they could for those locked away alone.