When visiting other people's homes I always gravitate to the photos. I enjoy looking and talking about them. In my own home I have pics of mum and dad in their youth and they are in my bedroom. For my children and grandchildren's pics I have made a collage in the stairwell interspersed with photos of me and my mates in our heyday. It always gives my girlfriends a good laugh as we reminisce old times.

home is where the heart is and best place to be offered breakfast in bed

Ah, I wouldn't think so. Photo B is the external side of the chimney, which would have originally been outside the house (the external wall). So i'm guessing your living room was added onto the house at a later stage. So it was never designed to be a double sided fireplace, like some are. And yes, it is a structural part of the chimney. By the way, your bedroom fireplace is a beautiful original mantle, I wouldn't touch it.

Are you able to put it on the side of your house away from your entertaining area.