It was designed during its architect's partnership with Dankmar Adler that also resulted in their co-design of the Chicago Stock Exchange building, and this ten-story building has a terra cotta cornice and is constructed of red brick.  
The primary architect of this building was fond of calling its rooms "cells in a honeycomb." This building's ornamentation is intended to make its supporting piers appear to be columns, and it was groundbreaking because part of its framework is semi-visible from the exterior. It was designed during its architect's partnership with Dankmar Adler that also resulted in their co-design of the Chicago Stock Exchange building, and this ten-story building has a terra cotta cornice and is constructed of red brick.  For 10 points, name this early building in the Chicago style, one of the first steel-framed skyscrapers, a Louis Sullivan designed St. Louis edifice.
The primary architect of this building was fond of calling its rooms "cells in a honeycomb.
the {Wainwright} Building