How did prisons develop

Prisons have developed as part of society since urbanism began by about 5000 years ago. The concept of punishment has shaped how prisons have been used by society, at times acting more like a holding area for criminals before punishment, while at other times they have been used to reform criminals. The use of prisons has shifted as societies have shifted their perception of justice over the centuries, where prisons were often the most clear physical manifestation of these philosophical shifts.