The Noble Room, point of reunion for authorities, is the most adorned part of the building, even in its outside. The windows which correspond to lower hierarchic ranks are smaller and less richly decorated. This newer block can be noticed from the outside by the form of its windows, slightly different from those which belong to the original building. The continued use for several decades has made necessary changes that, although they didn't alter the structure of the contruction, have decharacterized the original project. Division walls have been added and some internal areas now show iron bars, necessary to protect and restrict access to some sectors.
Some external windows have bars, revealing former prison cells.
The construction is very deteriorated, which is particularly regretable for its beauty and historic importance, but it still has good usage conditions - much better than those of several other constructions built by the same time in Rio de Janeiro. O decree 1970 of October 1st. The renouned architect Heitor de Mello was given this task. The building was built in only 17 months, inaugurated on November 5th. Police Palace dome and, in the background, upper part and heliport of the Civil Police head-office.