After the 1953 C.I.A.-led coup that reinstated the shah, the authorities walled off the area, turning it into a ghetto whose inhabitants were almost exclusively female prostitutes and their children; only men were allowed to access it through an iron gate.By the 1970s, about 1,500 prostitutes worked, and most of them lived, in the Citadel.In the ghetto, there was a health center, a police station, a social-work office and a crude education service that taught basic reading and writing to women and their children.