Oh, it's very huge not to mention it's well-built structure and creative coloring. But what's funny is how it came to be. Apparently Revolve was searching Google one night and found this image. From them on he was inspired by that castle, and then he set his sights on creating a castle like it and and I think he's done a good job. To give you an idea on how big this castle is just take a look below:
Here's a promotional video, by Revolve, to showcase his awesome castle. It's informative and neat.