Just when you thought the city had allowed building on every available space left, word comes that they are what was once considered to be off-limits may no longer be safe:
Open Spaces Are City's Next Frontier
In the meantime, lawmakers are adamant about not allowing a development to proceed on top of a Manhattan playground, but not necessarily because it takes away open space:
Lawmakers Vowing To Block United Nations Building Effort
Photo from Windows Live Local.