now a days all the house models first built in 3d model architecture and then the real work starts. To make a 3d model of a house or like @velimir showed the architecture of this castle its not a easy task, the size and lengths of each and everything takes so much time and energy of a 3d model maker or some people say the actual house makers. They go by the name of Home builder architectures here and they make maps of homes and everything people demand off.
The creativity and excellence works at the end pays of the value of all the creativeness and hard work.
The 3d modeling taking over the people who makes the maps by hand and now it is nothing but a time waste on old people.
3d modeling is taking over the world into new paths and this leads to conclusion that Everything now is possible and anyone can do anything.
This historical post you've shared is an example of that time work and yet it looks beautiful and great.
Thanks sir @velimir for sharing this beautiful blog with us !