There are a number of completed sub-levels to this tower that the duct work climate controls. I'm not positive, but I believe some of it has to do with the concourse for the new transit hub / PATH station which is partially below the 2WTC site.
Also, as disappointing it is to have to wait for this tower to go up,a part of me enjoys the state this tower will likely reside for the indefinite future. Say construction isn't restarted for another 3 years. By that time 1WTC will be open, 4WTC will be open, the Memorial will be open, and hopefully 3WTC will either be open or in the final stages of construction. It'd be likely that the streets that cross through the Trade Center site will have been rebuilt by then. So at that point, you'll have this curious oddly shaped and fenced off structure quietly sitting in the corner of the now open public space.
I just picture the floods of tourists passing through the area, unaware of the massive underground structure quietly waiting beneath these nondescript caps for their rise to fill the hole in the skyline and reach over 1'300ft. into the air.
Last edited by drumz0rz; May 16, 2013 at 3:25 PM.