I have three in my backyard, Barbers, the Statue of Liberty, and the Peach tower, all three worth less than 3000 pts.
All the big boni appear to be in the north east corner. The ones for 52,000 and 33,000 wipe out all other boni combined, so I think everyone would stay northeast just for those 2.
If anyone ever comes this way and needs help finding the three here let me know and I'll be your guide.