Sheriff Paul Penzone says Friday that part of the now-closed Tent City jail complex will house substance-abuse counseling programs for inmates.
The counseling will take place in air-conditioned rooms where Tent City inmates went for relief from the heat.
Officials say the move will let more inmates seek counseling.
Some jail yards within Tent City will be used as recreation areas for the programs' participants.
Penzone is assessing what to do with the remaining Tent City yards.
Sheriff Joe Arpaio opened Tent City in 1993 to ease jail overcrowding.
Critics say it was a way for Arpaio to garner media attention and contributed to a culture of cruelty within his jails.
Penzone announced plans this spring to close Tent City.
The last inmates were moved out of the complex Saturday.