My favourite idea for a long hallway or stairwell landing by all the bedrooms and bathrooms is to have a gallery wall of family photos. The idea is to keep all the photos the same colour (black and white, sepia, or colour) and have the same coloured framing mats and frames. One can vary the size of the frames and create an arrangement where the photos are staggered and come out from the centre (allowing you to add more and more as time passes) or alternatively one can create a grid. Also how good does this black wall look?