Dan Froomkin provides a floor plan of the West Wing of the White House, and an explanation of what the various locations mean as symbols of power. When you see someone from the White House on TV, this will give you a graphic view of how much real power they have.
It's interesting to see who has the corner offices. On the first floor, west side you have Josh Bolton (CoS) with a corner office then Dick Cheney with a middle office, and the other corner belongs to Steve Hadley the National Security Advisor. And Rove is central to all three of those guys. He is real close to the President, but has no windows.
The second floor is less interesting.
[H/T to Steve Clemons.]