Not sure why you called them brains... but I like it :).
For the Amusement Mile one, it's on a building near the GCPD building. It's directly opposite the water behind the GCPD Building, if you get that?
The Bowery one I don't even remember getting, but I got it. So, I don't really remember much about it except on the map it was near the middle of the Bowery from left to right, and near the bottom of the whole map on that side.
Just my .02. CatAtomic999 - Bruce Wayne is the sort of guy who eats his broccoli, and eats it raw.