Inspired by Greywater Watch from A Song of Ice & Fire (Game of Thrones). Greywater Watch located in the swamp of The Neck, which separate The North from the rest of the Seven Kingdoms. It is the seat of House Reed, known as the Gatekeeper of the North. It is said that the castle doesn't stay in the same place, that is why the enemies will drown because of their heavy armor before finding the castle and travel to the North.
The wooden tower are picture of I believe, 3D models. I couldn't get any better result on Google. It's one of the main thing that made this looks like sh*t. However I would still like to hear your opinion! Please feel free to leave comment and critics, they do help me improve!