Well, the flagpole didn't look tilted when I took this shot, I guess it must have been me. The flagpoles in the New York City parks have this masthead shape, with the City of New York flag on the left, and the Parks Department flag on the right (the Parks Department flag displays the leaf of a London Plane Tree.) I think it may be the P.O.W. flag under the American one. This was in Fort Tryon Park in Washington Heights.