Bryaxsis - I LOVE the first wall painting. If I had the energy I had in my youth I would attempt to copy that onto my bathrom wall. In fact, long time ago I did actually paint a mural on my bathrom wall, a Roman maiden standing with a bowl of fruit behind the toilet, and to her left was a scene of the Grand Canal in Venice. All in beautiful shades of burnt sienna, yellow ochre, blues, ect. My friends admired it so much, and it remained there for many years until I remodeled the room six years ago and painted over it. No photo of it was ever taken which upset my one friend very much. He was hurt that I painted over it. too funny.
Metella, it may not be what your are looking for but I found a site on Etsy that sold the most amazing shower curtains. They are expensive but the person photo copied some very interesting and beautiful scenes onto the curtain. I will try to look for the site and post back here. I had one bookmarked for a long time - it had The Three Graces on it I think, but I couldn't justify the cost.