section of Philadelphia has nearly equal populations of Hispanics and Blacks, although Germantown Avenue is still seen as a divider street, with areas between Germantown Avenue and Broad Street "more black" and areas between Germantown Avenue and 5th street "more Hispanic". East of Front street, blocks start to get more diverse, with significant populations of Hispanics, blacks and whites. Also, as the Hispanic community continues to grow eastward, the ethnic white enclaves of eastern North Philadelphia continue to shrink. See North Philadelphia is usually described as an area north of Center City, between Front Street and Fairmount Park. Sub-sections include: Lower North Philadelphia - Spring Garden Street to the south and Dauphin Street to the north Upper North Philadelphia - Dauphin Street to the south and Wyoming Avenue to the north Olney-Oak Lane, Philadelphia often nicknamed Uptown - Wyoming Avenue to the south and the Philadelphia city limits to the north Blight and Brownfields Today, many remnants of these more prosperous eras remain. However, many historic buildings have collapsed, either from neglect or demolition, and thousands more still lie abandoned. A handful have become protected historic properties, and 67 properties and districts were added to the National Register of Historic Places. Several blocks, with numerous old mansions, have been re-zoned as the aforementioned historic districts. A great many extravagant churches were built over the years, as well. Some still stand, but all too often money is scarce to preserve their deteriorating architecture. The trolley lines that once criss-crossed the northern streets and linked the region with the rest of Philadelphia were shut down by SEPTA in 1992. Immense, abandoned factories sit idle; warehouses lie empty; and disused heavy rail lines scar the landscape. The names of the old industrialists, such as Gratz, Poth, Uber, Bouvier and Schmidt, still adorn many buildings and street signs in the area but are otherwise foreign to many modern-day residents. The Neighborhood Transformation Initiative or NTI, was a City program launched by Mayor John F. Street. The program called for the demolition of thousands of condemned buildings and the construction of large-scale, medium-density public housing, with restoration efforts to be employed on salvageable houses. Many blocks of old rowhouses have been bulldozed and replaced with suburban-style tract houses. This program has radically changed some sections of North Philadelphia. Some charge that little effort was made to save a number of historic buildings, others that NTI