In parallel with the launching of construction (prior to 1933) of a major new traffic artery—the N–S Route, today’s Niepodległości Avenue, which was to connect the city center with the capitol’s northern and southern districts—work was commenced on the development of the acreage of the former Russian Jerozolimskie Barracks. This was an extensive quarter of formerly military land bounded on the south by Nowowiejska Street, with Niepodległości Avenue (formely Topolowa) to the east, Krzywickiego Street (formerly Sucha) on the west, and Koszykowa Street in the north. Over the years 1931–1933 the Military Housing Fund built a multifamily residential building designated for the officers’ corps of the Polish Army along Koszykowa Street and Niepodległości Avenue. This monumental facility, the work of Romuald Gutt (1888–1974), a prominent architect of the age of Modernism and a Functionalist (erected in collaboration with Józef Jankowski (1882–1944), was the start of the shaping of this area. It was a part of the planned construction of a complex of residential buildings for the military. Its urban design was the result of a closed competition (authors of the competition solutions: E. Norwerth, J. Reda, and R. Gutt). While the work of Romuald Gutt—his designs for public buildings—is a neverending subject of analyses by architectural critics, the building on Koszykowa Street is undeservedly signed off with barely a mention. The author’s philosophy was based on the design of architecture that met all functional needs and provided unequivocal meaning. This was embodied in this building perfectly. The Koszykowa Street building is characterized by its exceptionally powerful expression. Even today, the building is seen as a “fortress,” a “dam,” a “wall,” thanks to what is known as “gray” cement brick. The monumental street-side façade, upon passing through its gate, turns out to be only something behind the scenes intended to evoke the strength of the Polish Army. It is followed by a precisely designed space forming a green courtyard that is friendly to residents, onto which groundfloor terraces and apartment balconies open. The dwelling designs only seem to be a repetition of functional dispositions mainly applied in Germany. It is not just the layout of the rooms, but also their proportions and the many tiny, ideally though–through details of their furnishings that bear witness to the mastery of their designer. Discussions on the Koszykowa Street building are an effort at documenting the primary values of this exceptional architecture of the Interwar period. The facility is presently being forcefully remodeled (most of the dwell ing partition walls are being demolished and their space is being redesigned) and the thoughtful detail of their architectural décor is being successively destroyed as a part of that reconstruction.