Speaking of lighting, I just wish I had a spiral staircase so I could hang a chandelier like this one. It's so dramatic and so cool - it looks like a waterfall and a whirlpool all at once. I love it.
A really bold centerpiece can turn a plain old staircase into a grandiose space. Of course, the spiral staircase design here really showcases the decoration but you can create the same effect by hanging appropriate decor from the ceiling at the center or the top of any staircase.