The Absence of Architectural Elements

This picture was taken a month ago from my bedroom window.

This is the annual World Trade Center Site Memorial. Every year around September 11 the lights turn on at night to remember the two towers and all the people who died. Seven years ago the skyline seemed to have such an absence, a gaping hole. Now lights fill in the gap, but there is still something missing.

(Sorry about the crappy glare from my window.)