A rather bland-looking library full of a book.
(note that adding variety to the library's collection will come much later)

To keep the polygon count down, I've cut out the bevels on the bookshelves, leaving them hard-edged and easier to deal with.
Even the book has been cut down significantly to reduce memory and processing overhead.

The floor is now thicker, with a wood veneer over the lower section.

Why I needed to reduce the polygon count was because this is only one floor opening, and I want at least four, with at least two levels below this one, which makes for a great many polygons more than what I have already.
(the UI had already become unresponsive, and I can't afford to buy a new computer just to run this stuff on)