In case this is of interest to you, since 1997, a group of archaeologists and experts have been building a castle in France as accurately as they can in the way it was done in the 13th century. Apart from adding certain things for safety reasons, they try to be as authentic as possible. Of course, it's taken decades and it's still not done... but that's because it's a freakin' castle. (Also, they don't have a huge workforce, but that's something else.)

It's even had a practical use. They were able to apply what they learned when reconstructing Notre Dame after the fire.

https://en.wikipedia.org/wiki/Gu%C3%A9delon_Castle

There was also a British documentary series about it with three archaeologists from Britain who go to contribute to the project and live in a Medieval style- https://www.youtube.com/watch?v=ydoRAbpWfCU&list=PL72jhKwankOiwI5zt6lC3eQtsQDxOaN_g