Your version of the Castle may be different from our familiar one.
This sounds rather like the version we had shortly after Thankgiving of the first year, when our Plesiosaur was released into the moat. But before we took off for orbit, and on our way to Mars.
You see, it was during the time of buttoning up for travel that we stopped using open fires under most circumstances, other than the occasional ornamental one or for cooking in the various kitchens.
And we stopped using internal-combustion vehicles altogether.
In preparing to live in space, we had to find a way to move things and people about without using cars.
That's when we developed the tubular system of spherical elevator/subway cars that we use. All electrical, with magnets.
Anyway, since your Castle appears to be a schism product of our having run up against "the end of the Internet", it isn't surprising that it has some similarities. That's just the nature of the Multiverse. I have at least three different versions that I've been in.
You're probably still linked to us in mysterious and unfathomable ways. If you happen to attempt to traverse the lower levels of your Castle, you may occasionally and inexplicably find yourself in our Castle.
You'll notice the difference immediately of course. We're on Mars gravity. You could hit your head if you jumped.
Be careful!
I don't know NnB... That doesn't explain the purple Ford product that has a couple of other reported sightings..
Unless of course the fireplace with the seeming burning purple Ford product is only a holographic representation that is camouflaging the Dimensional Door...
I will ponder upon the possibilities on the morrow. Got my music all together and now must assume a quasihorizontal position to recharge my nanodes..
Otherwise they will be throwing things at the keyboard player...