The author analyzes the modern prison complex, which is a central but by no means the only defining institution of carceral geographies in the United States and beyond. In connection with the prison complex, the author identifies regional strategies of accumulation and upheavals, as well as the immensities and fragmentations that are reconstituted in space-time to begin another round of accumulation. The analysis also demonstrates how the prison evolved in tandem with world-historical transformations of the role of money in everyday life.