That's pretty cool! I remember making some fairly dope structures in Minecraft with Drevin and friends. We always would mine everything ourselves though and play entirely in survival mode to make it feel less like "cheating"; every block we placed, we earned/mined/forged.
I wonder how many hours went into building this? I also wonder if they'll ever release the map for it so we can download it ourselves and explore it! I'd love to do that and see just how much of it they added. It's certainly impressive, but at the same time, it's hard to be too impressed when the backdrop of the castle is nothing instead of the beyond beautiful environment that is Breath of the Wild.
Also lol @ "certified" team at Microsoft. Wonder what kind of gigs are available with a Minecraft certification, or what's even involved in that.