How does Bruno's father's office compare with the rest of the house in The Boy in the Striped Pajamas by John Boyne?

Father's office is quite an intriguing place for Bruno in The Boy in the Striped Pajamas.  In addition to the numerous soldiers always going in and out of Father's office for meetings, the best description of Father's office would be “Out Of Bounds At All Times And No Exceptions.”  This description, provided in all capital letters from the book, adds to its intrigue.  Bruno is not allowed in Father's office on his own at any time.  Father's office compares to the rest of the house in that most of the other rooms are free to explore for Bruno and his sister, Gretel.  It is a rare moment when Bruno is actually called into this mystical room and, when that rare moment happens, Bruno is far more worried about what Father will say than what Father's office looks like.  This description is a perfect example of Bruno's innocence.  Bruno only knows what he sees: numerous women with typewriters, soldiers in uniforms, and many other "important" people who bustle in and out of Father's office.  It shows Bruno that Father is a very important member of the Nazi regime.