The Cincinnati Reds have one of the most divided ballparks in all of baseball. The way GABP was laid out lends itself to separating each level of fan from the others. Once you get past the initial entrance, you are quickly encourage to go to your area and stay there.
First there is the high end boxes that start behind home plate and extend down the third base line on the main level. There is only one non-descript door way to enter the hall to get into the boxes. You have to have a ticket and wear a wristband to move about the area.