Some references I gathered initially for this POI included all sorts of different towers in traditional and popular culture.
I quickly realized I'm no architect or engineer. I needed to build something that isn't too larige but still has an accessible interior space.
Finally I ended up with that I was semi-pleased with aesthetically while still maintaining practicality.
Roofing, doorways etc were clad with modular wood planks and beams. Imagine having to carry all this stone and wood to a remote location in ancient times. I'm just happy I have a mouse.
Some of the modular assets were edited so that I could create different patterns in various corners of the building. However they were mostly built with existing assets.
Bookshelves... no scroll shelves built also with modular assets.
Did you bring your library card?
Shelves were installed throughout the building and tower, as per the original concept.
Roof tile assets were taken from elsewhere. I edited the material so that I could variate the tone and colour via primitive data. This is more performance friendly and practical than having to have a material instance for every colour and tone.
Destruction details, rune signs in decals, interactive actors were added in.
I also added a basement area to take a environmental storytelling a bit further.