While we wait for the new worlds that will be possible when CAW is ready, I have been converting Hood Deco - this are the Castle Walls & Towers, by the fabulous creator Sunni (RIP!). They can be placed in the world with T.O.O.L - by Twisted Mexi - and can be used to hide unnecessary modern stuff in your historical saves.
If they have windows, they will be lit up when dark :)
They are big. There is a smaller version, the mini walls, and of course you can also use T.O.O.L or the in-game function to adjust the sizes. The gates have no doors, but there is a deco door you can place where needed. I used them around my replacement for the Science Lab, the Peteran Monastery, to keep pesky strangers out:
There are a couple of swatches, grey, white, black, sand with some variations. Matching sets of walls and other stuff will follow.
Oh, and this is the first of my Winterfest gifts this year! Happy Winterfest!