Mars casttle (マルスの居城 - marusu no kyōjō,) This castle is located a few hundred meters from the Babel Tower, and that is where the family resides Mars and his army on Earth. Aria is also held captive.
The Saints , private headquarters after the destruction of the Sanctuary, meet there also to receive their orders.
- Aria is trapped on the 70th floor of a tower west.
- Eden, in his youth, visits Aria, already imprisoned in a tower. However, it seems impossible that the castle has been on Earth at that time (it would have been to the Sanctuary).
- Saint Seiya Omega (debut)