"A glance at the World Trade Center site from Greenwich Street tells a lot about progress there: Eight years after the Twin Towers fell, a 10-foot-tall, barbed-wire fence still surrounds the 16-acre void in the heart of Lower Manhattan.
Squabbles over designs and funding have caused severe construction delays. With the exception of the SOM-designed 7 WTC, a 52-story tower completed in 2006, the only discernible progress has happened below street level, on a museum and memorial planned for the site."
The memorial -- two pools -- are farthest along. The museum is also progressing, but above-ground work on the site of the former towers has not made much headway.