We weren't the only ones to head to Castle Island this afternoon - including this guy peering hopefully into the closed Sullivan's, which, believe it or not, is scheduled to open this coming Saturday.
This guy seemed to like the conditions just fine:
Image may be NSFW.
Clik here to view.
Clik here to view.

As you can see from the photo, Pleasure Bay (and beyond it, Dorchester Bay), was pretty much frozen over. On the harbor side, though, the water was still liquid.