(Image via Valentini's)
Of course, I know our tax bracket, so we'll likely end up with something closer to this: (oh wait, we have this...)
(It's Cuisinart...and no, I don't store bread and cheese next to it.)
I have, in that past, installed wine rooms in many a home. Commercially, as well, but that is generally an under-counter refrigeration unit similar to the one above. In-home wine cellars allow for a lot of creativity: everything from basic storage to - in one case - cored holes in the walls of a basement. I wish I had photos of that, but it's never light enough to get a good one.
Anyway, that's my wishing for the day. A very large room to hold a very large quantity of wine.