Philadelphia is a city filled with historic architecture constantly on the verge of obsolecence, and preserving it without stunting the city’s growth has become quite a challenge. Case in point: the city’s array of old, outdated neighborhood hospitals: too small to be functional in a modern “health system,” yet of undeniable architectural import and aesthetic value. So what to do with the buildings? How about converting them to senior housing with federal money, thereby creating “the least antiseptic low-income housing project ever financed by the U.S. Department of Housing and Urban Development.”