Don't know what this is exactly, but it's near where the PATH station is, so perhaps it's that. As far as the real buildings go, there is such a colossal battle going on between Larry Silverstein who held the lease on the Twin Towers and the city, as well as the state and whoever else is in the thick of it, the buildings may never be replaced. Google it, and if you can figure it all out, you're a better man than I am, Gunga Din.