In the span of 5 months, from March through August 1993, workers erased 70 years of history between Chicago Avenue and Pearson Street. Beginning in the middle of the three-section buiding, the arena section of the 1925 armory addition was the first to go. As seen in the color photograph, below, the western wall of the original eastern building was exposed for the first time in 68 years. The last part of the building to go occupied the space of the current front plaza of the MCA. The 1939 Black Horse Troop addition extended all the way to Seneca Street, today's Mies van der Rohe Way.