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In contrast to the openness of the boys' correctional facility, the slightly earlier facilities for adult prisoners reflect the nineteenth century's approach to the prison as a fortress. To the south, Christopher Dexter's T-plan gabled barracks building recalls the format of such institutional buildings from earlier in the century, including its predecessor, the demolished 1845 state prison in Providence. To the north, Stone and Carpenter's massive granite building also originates in a T-shaped core of cell blocks, but centered in an octagon as the heart of a sophisticated massing which means to suggest the basic functions of a complex institution. The octagonal core was designed to house a reception room at ground level and centralized guard stations at the levels above, all topped by a chapel, its interior rising within the conical roof into the domed cupola. It is laterally flanked by two cell blocks on either side, stepped wings composed of the outermost block stepped back from its companion. Another cell block projects from the hub building rearward. Together, they give the prisoners' portion of the complex an overall T-configuration with extended arms and a stubby stem. Walls cornered by guard towers slide a