In The Legend of Zelda: Breath of the Wild, Hyrule Castle is a formidable fortress that most will not dare to venture in early game.
So what is your best approach? 3D print a full Hyrule Castle model and plan you entry like those Military Sand Model briefings.
Thanks to the efforts of TheCrypticOne007, you can now print your own model as well from the link here. Great work! Now we can plan the Seige of Hyrule Castle with ease.… wait what? There are underground tunnels as well?