This is another week where the two photohunters themes (Unknown and Windows) work well together.
In a large city like New York, NY there are a large number of unknown windows in tall buildings. I certainly can't imagine trying to count the number of windows in these buildings.
There is a lot of unknown activity taking place behind these many windows.
Reflections make the rooms behind the windows unknown in some cases.
Even when you catch a glimpse of the rooms behind some of the windows they are like looking in a doll house and most of what's taking place is unknown.