I’ve been watching a building going up a block from where I live in Philadelphia. 222 Market Street is a nineteen-story office block. The structure is steel, and except for a couple of odd slanted columns at one end, it is the sort of regular frame of I-beams that engineers have been designing for well over a hundred years; the first steel framed building in the U.S., was Burnham & Root’s ten-story Rand McNally Building in Chicago, erected in 1890. When the Market Street steel was topped off the structure reminded me of the high-rises that Mies van der Rohe put up in Chicago in the 1950s. Mies followed the age-old practice—going back to the ancient Greeks—of expressing the structure in the architecture; in his case in a very bare-bones fashion. That isn’t good enough for the architects of 222 Market (the global firm Gensler), whose approach I can only characterize as Let’s Pretend. The skin of the building, a combination of glass and flimsy-looking prefab glazed brick panels, is designed to give the impression that the building is composed of three-story high stacked-up boxes. In other words, architecture has been replaced by packaging.