Where is the good place to hang a family portrait?

Family photos are divided into two categories, one is family photos of it runs in the family or four generations under one roof; One is a family photo of a family of three or four (that is, there are only two generations of parents and children). The first kind of family photo, if it is a bigger one, can be placed on the back of the sofa in the living room; Smaller ones can be put on the desks and bookcases in the study. The other is best placed in the bedroom, study and dining room.