[Aerial view of the World Trade Center site.]
[Aerial view of the World Trade Center construction site.]
[Aerial view of World Trade Center construction.]
[Aerial view of construction of the World Trade Center.]
[Aerial view of World Trade Center under construction.]
[World Trade Center construction site.]
[Aerial view of the construction of the World Trade Center.]
[Aerial view of World Trade Center construction site with numbers.]
[World Trade Center site under construction.]
[Aerial view of the World Trade Center under construction.]
[Workers at the World Trade Center construction site.]
[Aerial views of the World Trade Center during construction.]