I generally avoid going to Manhattan if I don't have to, but all the fun boulders I know of are in Central Park (okay, also in a few other Manhattan Parks). According to the office of parks, Brooklyn is also on top of a giant chunk of near-the-surface bedrock, though, so it's surprising to me that it wouldn't have just as many bouldering spots as Manhattan. I've fairly thoroughly explored Prospect Park, which seems the most promising, but found nothing.
Any secret info on boulders in Brooklyn? I might also be interested in stuff in Queens, depending on where.
I haven't been able to craft a search engine query that doesn't turn up exclusively results about the Brooklyn Boulders rock gym.