Not a YouTube channel unfortunately but there are several videos and documentaries about it.
The castle of Guedelon is exactly what you are describing.
In France a group of archeologists decided to build a full castle, from scratch pretending to be in the XIIth century.
A blacksmith is making the tools, they are chopping trees in the first forest around, extracting stones from a local carry, carrying on carts built by the Carpenter, making their own clothes …
Not a YouTube channel unfortunately but there are several videos and documentaries about it.
The castle of Guedelon is exactly what you are describing.
In France a group of archeologists decided to build a full castle, from scratch pretending to be in the XIIth century.
A blacksmith is making the tools, they are chopping trees in the first forest around, extracting stones from a local carry, carrying on carts built by the Carpenter, making their own clothes …
It’s amazing !
I visited this place many years ago during w school trip. It was pretty cool. Pro-level roleplay