The Park at 7 World Trade Center is a privately owned, roughly triangular half-acre plot beside the new 7 World Trade Center office tower in lower Manhattan. Also called Silverstein Family Park, after WTC developer Larry Silverstein, it stands on part of the footprint of the original 7 World Trade Center, which was destroyed in the September 11 attacks.
The main feature is a circular fountain with, normally, a nine-foot-high Jeff Koons sculpture called "Balloon Flower (Red)" at the center. (There's a good photo here.) But the sculpture was missing in action when I stopped by. Apparently it skedaddled last fall so that piping beneath it could be repaired, and is expected to return one day. Pining for it, perhaps, a lone child stared forlornly into the fountain, while a nonchalant pigeon signaled that, to him, the whole affair meant nothing.