For some reason, I was standing around Cooper Union's 41 Cooper Square the other day. I was on the east side of the building that faces Shevchenko Place/Hall Place when I looked up and... well. Is that a dent?
There are perforated panels and there are dents. Can't say for sure how long that it has been this way. I couldn't find a good photo of this... here's a dent-free image via Google dated August 2011...
Anyway. Any ideas what may have caused this?
In an email, an EVG regular figures the building is being used for stealth intergalactic missions, and a piece of space junk dinged the building on a return trip. Seems plausible.