It's not the most-appealing section of the Rose Kennedy Greenway, that's for sure. It's to be expected, though, given its location near the Federal Reserve Bank of Boston and South Station, and given that it includes what I believe to be a ventilation shaft / garage.
Not much happens here. During the hour I sat nearby, about ten to twenty people stopped by the sandwich truck. The only other occupants were hundreds of pigeons who flew in and out of the "park".
Oh, and a guy on a stand-up lawnmower looking terribly uncomfortable as he cut grass that didn't need cutting.
What could fill this space instead of grass? How about a croquet field?
How about a helipad?