This new chapter in the misadventures of Iga and Kouga ninja focuses on an attempt to revive Nobunaga by a group of Tokugawa opponents, the Joujinshuu. As a "cradle" to host the rebirth of Nobunaga, they set up this disturbing moving castle heading for Edo, dubbed the Murakumo, which is, by far, a perfect copy of Azuchi castle!
The first appearance of Murakumo is indeed grottesque and disturbing, if just for the "crawling walls" wrapping it in a snakey fashion--!
This version of Murakumo can be seen in detail in episode 10 "The Heavenly Robe Sees Carnage".
After a first subjugation, the castle actually returns in all its fancy strenght, this time as a fortified, walking version of Azuchi:
Here are a few shots of the interior:
Here is part of the moving mechanism:
Last but not least, the castle is accessible from its bottom by some kind of runway: