Let's take a look at the Golden Ratio Crop tool.
The purpose of this cropping tool is to draw your eye to a natural point of focus. The grid on the Golden Ratio crop is setup specifically for this.
In my example, I wanted the eye to be drawn to the entrance of this building. So, I used the Golden Ratio cropping tool and selected the intersection of the overlaying lines provided to make a natural point in the photo for the eye to be drawn too. You can see the intersection of the lines is right on top of the double doors.
Check it out here.