A veritable city within a city, La Santé—as it is known—is an unworthy old lady: unworthy of housing human beings. Located in the heart of Paris, it needs to get back on its feet, and its closure for renovations in early July 2014 provides an opportunity to reflect on its past. Here is a non-exhaustive portrait of this Parisian prison, whose very architecture sheds light on its history and how it operates.