Century 21 Urban Complex (aka Kennedy Boulevard Project, aka Drexel Plaza Project, aka Kennedy Building Project)
JFK Boulevard from 20th Street to the Schuylkill River
Well before the proposal of the Philadelphia River City, the same area was the site of another massive multi-building proposition, the Century 21 Complex. This mixed use mega-city within a city, if built, would have changed Philadelphia forever. The project, unlike the River City, wasn't killed by NIMBYs worried about shadows... it faded away without a whimper.
Read more at the Citypaper's Naked City Blog!!