Prisons are designed to house people who have broken the law. Inmates are locked away for a set period of time and have very limited freedom during their incarceration. Confinement in prison, also known as a correctional facility, is the punishment that courts most commonly impose for serious crimes. Today, Nigeria is facing the problem of insecurity and also the problem of unemployment which increases the rate of crimes committed in this country. The capacity of Lafiagi prison is 34 and presently over 100 prisoners are in it. These issues and more are the reasons why a well designed and functional medium-security prison at Lafiagi is needed to house convict, C.C, ATM, ATF criminals. This project was undertaken by way of a careful selection of some methods. The methods involved are case studies, oral interviews and reviews.