I tried to create a simple presentation that mimicks as much of the real exhibition experience as I can within reasonable effort...
Oh, I like this idea!
It reminds me of a wedding photographer's gallery I came across years ago, and saved offline entire as inspiration for my students of web design. It had that same feeling of entering and moving through a virtual space to view the photographs.
I especially love the ability to hover over the gallery note if I desire, but not be distracted by text while I view the (exquisite) images.
In the context of web design, I'd like to find more elegant icons to indicate moving forward or back. And I'm not so sure about the warm gray on the "floor". I also wonder if that could be reduced in depth; it's drawing a bit more attention in the total frame than I would like -- taking a little away from the beautiful presentation of the images.
All that said, I am so moved by what you have been able to create through a pain I can't imagine.