Home to Rastai Kaan, Junon Tam, and several of Cannogakure's senior ranking officals. The Halcyon Leviathan is a relatively younger member of the herd, almost half the size of the Reaver Academy Leviathan.

The Halcyon Leviathan was, until recently, one of Cannogakure's Siege Leviathans, and one can still see some of the secondary mountings upon it still active, or at least, not fully dismantled.

Upon the back of the Halcyon Leviathan is the Primary Armory, Foundry, and the Sealed Tower.

Primary Armory: This is where the Staal Clan keeps the prides of the Nagato Clan smiths labors. The best in arms and armor available are stockpiled here, doled out to warleaders when deemed necessary and used the arm the elites of the Staal Clan in times of trouble. The Primary Armory is always heavily guarded, and warnings and clearly posted of the deadly traps that defend it. Granted it doesn't warn you WHAT they are, merely that they are in fact there. More than a few bloated carcasses have had to be dragged off from ill planned attempts to crack the Armory.

Foundry: The homes and business offices of Rastai Kaan, Junon Tam, and other members of the Cannogakure elite. Only the most powerful and influential of clan leaders find themselves with homes on this primary real estate. Only 46 members live upon the Halcyon Leviathan, all considered within the inner circle and highly powerful.

Sealed Tower: Off limits to all but Junon Tam and Rastai Kaan. No one has been known to enter alive since they have taken over. It is believed the Sealed Tower holds the greatest of the clan's secrets.