#7 has been open for what, 3, 4 years now? It's incredible and beautiful (and probably 75% empty, but I think they've had some leases of late). And of course it was built by a private enterprise -- thank you, Mr. Silverstein.
The rest of the design is cheesy and overwrought, but that's just my humble opinion. Others have testified to its gross mismanagement.
The other magnificent building in Manhattan, the Empire State Building, was completed in 13 months.
But why build space nobody needs?
#7,on the right, trapeziodal footprint. The facade actually reflects the sky around it in very beautiful way.