This must be the third or fourth time I've tried recreating a concept I've had (and first tried to create) back when I was still playing the Xbox-360 Console edition.
Neverending Palace is a dark palace made almost entirely out of Nether Bricks. This latest room is a recreation of a much larger one that was much less well organized and REALLY hard to put together.
a wide chamber divided up into 5x5 rooms. Including the entrance hallway there are 45 doors (the "exit doors" can't be closed) and there are 3 switches. The 3 switches have 8 combinations... 000, 001, 010, 011, 100, 101, 110, 111. So, 45 doors to either open or close based on any of 8 combinations.
To the right of the mass and jumble you can see a platform sticking out, that's my "Chessboard" miniture (I call it that because it's mostly smooth quartz and black concrete, giving it a chessboard appearance where I have the rooms in miniature size. The colored concrete to the left is to represent each room. Each room gets two colors, red, yellow, green, blue, and purple. The top color represents the horizontal, you may notice the closest colors have a "black/black" pillar beneath them, that black/black represents the entrance hallway. The bottom color represents the vertical. If that's not confusing enough, each path gets two sets of colors, because they represent a door BETWEEN two rooms. And yes, the chessboard uses the two-colors-for-a-room system as well.
The project does take a good deal of time but it's also not as slow going as you might think. This is room number 4 (not counting the entrance) and each room features a puzzle. I'm also not counting the side alcove that is designed to trigger if it gets dark outside, closing the main hallway and opening a side closet with a bed inside. This is in case the player(s) get bogged down with time and need to get past night. Of course with so much happening indoors the day/night cycle is a little moot.