A huge fantasy wizard tower created by Jeracraft.
Jeracraft is an amazing builder and I would highly recommend checking out his youtube channel.
NB : I did not create nor do I own this build, however I have not seen a schematic file and so have decided to create one. All credit goes to the owner. This is his video on how to build it. https://www.youtube.com/watch?v=ik5K5WBwNSw