Infrastructure geeks, don't miss these gorgeous and moving photos by our colleague, Stephen Nessen.
Stephen's been up in the Freedom Tower as recently as last week.
WNYC began visiting the World Trade Center site in April 2010 and continues to document the construction of One World Trade Center, the 9/11 Memorial, the transportation hub and the people working on the site.
Check here to see the latest photos from the work site.
