Demon Lord Castle Noah

The Demon Lord's Castle Noah is a giant castle created at Demise by the last descendants of Azazel. It also functions as a spaceship that Arata and his allies use to travel across worlds in search of the Trinity Seven as Arata needs to find them again before his rematch against the goddess Aryan Celestial.

Overview
The castle itself is actually an artifact that was buried and hidden deep inside Demise. The castle can only be controlled by Demon Lords. It has the mobility to move across space-time itself. It features windows, hot springs and baths, and controls to move the castle similar to a spaceship. It requires all the Demon Lord Knights to operate it. Noah castle also has monitors to show images and explain situations. Since Arata is in control he is presented with a throne he sits and give orders. Inside the castle there are knights who patrol the area, and cook food and do other chore work.

The power source of the castle is the Demon Lord himself. Due to the castle itself is the last hope to save the world it can travel to even isolated dimensions. The castle is very durable and can withstand attacks however it can still be damaged. The castle also always floats in the air and never descends.