Answer:

prisons

Answer	Crossword Clue
PRISONS	Attica and San Quentin
PRISONS	Sing Sing et al.
PRISONS	Places where cell phones are prohibited?

PRISONS	Atlanta, Leavenworth, etc.
PRISONS	Bastilles.
PRISONS	Lockups.
PRISONS	Dartmoor and Old Bailey.
PRISONS	Folsom et al.
PRISONS	Attica and Newgate
PRISONS	Sites of many bars
PRISONS	Cooler places?

PRISONS	Joints
PRISONS	Where people do stretches
PRISONS	Jails
PRISONS	Places found up the river?
PRISONS	Slammers
PRISONS	Sites of many bars?
PRISONS	Hacks' workplaces