Which is NOT a noted design of prisons?

The design of prisons varies depending on their intended function, security measures, and the philosophy guiding their operation. One notable design that is widely recognized in prison architecture is the radial design, which allows for efficient supervision and control of inmates, radiating out from a centralized point. The telephone pole design typically features long, linear units for housing inmates, facilitating movement and security checks. The campus design incorporates multiple buildings within a larger area, promoting some level of independence among different facility units.

The circular design is less common and not typically noted as a primary design in modern prison architecture. While circular elements may exist in some facility layouts, the typical reference to prison design does not include a distinct "circular design" as a defined or effective model. This distinguishes it from the others, which are established architectural constructs in the context of corrections and penology.