We can't see the height of the wall or how it relates to the rest of the room so it's hard to make decor suggestions.

Personally, I would put a large piece of art over the buffet at eye level.

Looks like it's sort of a transition space between your living and dining rooms. I would paint it the same color as the living room, if it's not already. Then, as dee suggests, hang a large piece of art above the buffet -- make sure it's something that personally speaks to you and that you'll love looking at every day. The buffet is nice, but I wouldn't try to make it a stand-out piece. Let your artwork take center stage.