Here are some images of what I think is the most detailed room ever! I used maps of the void in the end on item frames to give it some extra detail! Using maps of the void on walls can make the walls look completely without corners and look completely blank if the block behind them emits light, like glowstone. Here are the images of the most detailed room ever!
This is from one corner of the room!
This is another corner!
This is my favorite view of the entire room!
And backed against a wall because it's so small!
This is the floor.
This is part of the ceiling!