Having a glass ceiling as opposed to the fully enclosed shower shown (an insulated ceiling) is going to pose some challenges: the surface of the glass is going to act as a condenser and rain cold water. Maybe not a lot, and not noticeable with the shower running but if you stay inside to dry off you are going to get dripped with cool water. The other aspect is going to be maintenance of both the interior surface (which will dry with lots of waterspots unless you squeegee cold water down on yourself) and the outer surface which is going to be a dust collector that you are have to get on a ladder and reach over to clean. Its an interesting idea, but for me personally, the potential negatives would outweigh the potential pluses.

We have a 36x42 inch fiber fab shower stall. The shower head is on the side and there's a two inch built in shelf across the back wall. It also has a built in curtain rod that is handy-er than I thought it would be. I think it was in the $650 range and we're very pleased with it. Combined with a delta shower head/ slide bar combo it's perfect for my family from the three year old to my 6'+, 300#+ husband. The best part is that cleaning is a snap and there's zero maintenance. heres a link to our stall. It was installed in a gut renovation January 2015: http://www.fiberfab.com/fiberfab-products/16.htm

I have an update and would love to get some feedback before I order the final accessories. (Demo begins one week from today!) I got a quote for replacing the vanity with white cabinetry complete with a sitting area, plus hardwiring of sconces. The costs all added up to too much for me, so I'm sticking with my vanity and overhead lighting location. I feel great about my choices for tile, bath tub, paint, and fixtures. My worry is that all the little accessory details won't quite work together, diminishing the beauty of the bathroom as a whole. I need to buy the accessories soon; here's what I have in mind. With overhead lighting instead of sconces, I prefer one large mirror. The mirror is by Pottery Barn, a wooden frame with gold gilt, 72" x 36". Perfect size for the space, very very very hard to find. This is technically a floor-length mirror, so I hope it can be mounted horizontally! PB customer service was useless when asked. The lights are also PB, polished nickel. For practical reasons, I ruled out any overhead lights that take type B bulbs (too dim) and have fabric shades (too hard to clean). As a big plus, these are on sale for $170 each. Do they go with the mirror and the rest of the room? Chandelier is PB, 18" diameter, antique brass, UL-listed. This will be over the tub on a dimmer. It was hard to find a chandy that's not too big, ornate, and/or expensive. Knobs and pulls are glass and polished nickel from Restoration Hardware. Towel ring, TP roll, and hook are Ballard Design in polished nickel. Fabric for the roman shade is gray on cream linen. Shower bench is Signature Hardware in teak. I hope this will help tie in the wood of the vanity with the other side of the room. Towel warmer is polished stainless steel (no nickel option) from Signature Hardware. If anything doesn't quite mesh or looks wrong, I would love to hear, as well as any suggestions for alternatives!

Not entirely sure what you're asking here - are you wondering whether you can make steps out of glass blocks? If so, that's a no. Glass blocks are hollow and probably slippery :)