In the mid-19th century, most of the land was acquired by the State of Rhode Island to construct a state prison, a poor house, and other state facilities. The Rhode Island State Prison, designed by prison reformer John Haviland was first built here in 1878, is a stark and imposing gothic structure built of granite block. Over the last several decades, numerous other institutional buildings for incarcerated criminals and the intellectually disabled were constructed here.
Today, Howard encompasses an area of almost one square mile. Its numerous prison buildings house over 2,000 male and female prisoners as well as several hundred mental health patients.