The prison comprises two levels: the upper chamber, used for detaining prisoners, and the lower chamber, a dank, dark cell where inmates were often executed. This lower chamber was accessible only through a hole in the ceiling, emphasizing the grim conditions faced by the prisoners. The Mamertine Prison is now a museum, offering visitors a glimpse into its dark past and the harsh realities of ancient Roman justice. The site remains an important historical and archaeological landmark, reflecting Rome's complex history of power, punishment, and redemption.