This is a so called Dwarf Magician's Factory from our Leniland Story Server. (Minecraft Java 1.17)
In this Factory the Dwarf Magicians of Leniland build armors and tools for the Kings's Guard.
Paste it where you stand. It faces north. If you are using WorldEdit please use [//paste -e] to also paste the entities like armor stands etc.
The Building has a basement, so when you paste, it goes 6 blocks into the ground below your feed where you are standing.
It is one of many pieces of the Leniland Story Server, making it possible to create your own adventure map.
Find more videos of the Leniland Minecraft Story Server at YouTube: https://www.youtube.com/c/LenilandStories/videos