The Five Sisters and the Mother
A product of early Shogunate geomantic engineering, the Five Sisters and the Mother were built before the long slow decline of the most advanced tools had really begun to tell. As part of the third Fifty Year Plan, this cluster of manses was built over several hundred square kilometres of ocean with the dual purpose of both aiding in sea navigation and extracting power from Creation to fuel the vessels of the South-Western Fleet.
The five lesser manses, known as the Sisters, take the form of lighthouses built on poles of black jadesteel sunk into the seabed, surrounded by a star-shaped artificial island-dock. Each Sister was built to identical specifications, and hence they are wonderful exemplars of early Shogunate architecture, with broad, ornate bases and the classic 'Dragon's Eye' style of essence-light within their pagoda-chambers. At present, the beacons are deactivated, but with the right codes they could shine once more in theory.
However, the individual power of each Sister is lessened by their presence in the geomantic web that feeds the Mother. They are effectively geomantic acupuncture needles in the dragonlines of Creation, re-directing it towards the central manse and so only some power pools around them. It is said that even this is an inefficiency, and in the High First Age great jade towers were built to channel the works of the Solars without sapping them.
The Five Sisters and the Mother have not been maintained since the Great Contagion, and as a result the geomantic web is heavily damaged. One of the Sisters is destroyed, a second has torn loose from the dragonlines and a third has been polluted by the shifting essence flows of the world. The Mother is substantially weakened by this. It would take extensive work from a trained geomancer to restore full functionality to this manse network.
Similar set-ups of five lesser 1-dot elemental manses all of a single element boosting a central manse to a four or five dot manse can be found all over Creation. The fundamental design of these things was well-known to the early Shogunate as they sought to compensate for the lack of Celestial brilliance, though as time passed such workings grew rarer. The considerable amounts of pure jade from the elemental poles that these arrangements required grew prohibitively expensive as the Shogunate destabilised.
The First Sister
Manse 1 (Water 1) - still connected to geomantic hub
The First Sister stands in shallow waters close to the volcanic archipelago of Musraha. On a clear day, it is easily visible from the shore. The tall black tower has been claimed by the local spirit court, and the harbour surrounding the lighthouse is bedecked with shrines, votive offerings and prayer tablets.
The local tide goddess demands the most handsome young men from the local fisher-clans in return for favourable currents, and when she tires of them they make up the priesthood here - at least when she doesn't offer them as sacrifices to her superiors so that they turn a blind eye to her actions here. Because of this, the locals know that when a newborn child washes up in the tides harming them risks their goddess' wrath. Divine blood has entered the tribes and now they grow more aggressive, turning their tidal powers towards the conquest of other island tribes.
The Second Sister
Manse 0 (Depowered) - originally Manse 1 (Water 1), disconnected from geomantic hub
The Second Sister is dead and cold. The geomancy of Creation has warped enough that the demesne underneath the manse withered and died. Now the manse sits inactive, a tower with no mystical power or light. Seabirds have colonised it and the layers of guano are metres thick in places. It is nearly impossible to tell that it was built by human artifice.
To restore her would be a difficult undertaking, for land is far away and most geomancers cannot hold their breath long enough to do the delicate work on the surrounding seabed. Still, the dragonlines have not departed this region entirely. The Second Sister could be restored, if a suitable individual could be found who could work in these conditions. The tribe of orca beastmen may also be a problem in such a work, though they could also be an aid.
The Third Sister
Manse 1 (Wood 1), Demesne 1 (Wood 1) - originally Manse 1 (Water), disconnected from geomantic hub
Choked with sargasso and kelp and coral, the Third Sister was corrupted by the surge that flowed down the dragon lines of Creation when the Pole of Wood reconnected with the Loom of Fate after the end of the Crusade. The resilience of the Shogunate design withstood the shift in its nature with only moderate damage, but the Wood essence channeled through a structure built to channel Water essence has had dramatic effects. Sargasso chokes the seas around the Third Sister for miles around, so thick that fruit trees and grasses carried in bird droppings have colonised it. From an outside point of view, it looks like a sizable flat island, green and lush and verdant, built around a vine-choked spire.
The power pooling here is more than the site was meant to handle, and thus the wood essence bleeds out into the world around it. The wildlife that has made its way to this false island become infected by the nature of wood. Lizards have bulbs growing on their backs, insects lose themselves to parasitic fungi and there are species of birds who have leaves in place of feathers. Several shipwrecks have stranded humans sailors here, and their shambling descendents with bloated fungal blooms in place of heads still reside here with no hope of escape - for the ships that docked put down roots and their masts blossomed.
The Fourth Sister
Manse 1 (Water 1) - still connected to geomantic hub
The Fourth Sister sits in the remnants of the raised uplands of a landmass destroyed in the war between the gods and the primordial titans who built the world. The blasted basalt still contains the half-exposed petrified remnants of the ancient pre-human races who died in this cataclysm. In a feat of irony, the bastard children of the Lintha have claimed this manse, and use it as a dock. Their sleek pirate ships anchor here, far away from shore. The kindly currents make it a rich fishing zone and there is fresh water here.
As a result, the signs of the Lintha are clear here. They have hung their sail-banners from the high places and their castrated slaves live on ramshackle jail-rafts that are anchored on a nearby coral reef. It is a useful place for them to bring stolen ships and slaves, and a source of hearthstones to bribe corrupt gods or offer to their infernal masters, nothing more. They know nothing of the power that this place was meant to channel, for the Lintha make nothing, knowing only how to steal and sail and fight. They are blind to the geomantic artifice in place here.
The Little Sister
Manse 0 (Destroyed) - originally Manse 1 (Water), disconnected from geomantic hub
The Little Sister shattered during the Balorian Crusade. The chaostide swept up the water and the seabed together, bringing them to crash against the jade supports of the then-Fifth Sister. It fell. When the First Empress called down iron and thunder from the heavens, she calcified the entire region. The chaostide formed land around the seed nucleus of the jade tower - which called to other things of that ilk. Around them formed the twisted island of Sorame, that is bigger on the inside than the outside.
Sorame is a madhouse unfit for mortal men. Caves eat men who step into their mouths, while flocks of houses migrate across the landscape, settling in places with scenic views. Things that might once have been creatures of Creation but are now wyld-beasts stalk the land. Fate holds weakly in this place, and what is hard elsewhere is simple here - and vice versa. The sun never shines on this island truly, a dome of fog shielding it from the Sun's hateful glare. A single hole in the top of the shield lets light at midday shine down on the ruins of the Fifth Sister, embedded at the peak of the central mountain - along with several sunk Shogunate warships, the melted-wax corpses of their fully armed Terrestrial captains, and a fortune in jade.
The Mother
Manse 2 (Water 2) - originally Manse 5 (Water 5), only two of five manses connected to it
At the centre of the tattered geomantic grid of the Sisters sits the Mother, resting on the seabed. Should her commander decide, her terrible bulk of jade can rise up upon the currents to breach the surface of the water. Within her, she has the facilities and the tools to maintain and repair Shogunate vessels, though with her geomancy so critically disrupted these facilities are offline. Two great cargo vessels of this lost era still wait within the docks, still manned by the plague-dead corpses of their crew.
Built to harsh Shogunate lines, time has not softened its edges nor has coral colonised the Mother. Within her halls stand the deactivated forms of her automated golem-crew. Only a few can activate with the flow of power reduced as it is, but they are enough to maintain the station and - as protocol demands - raise the facility once every ten years to ensure that all things function as they should.
Even in her lessened state, the Mother would be worth a fortune if she were to be rediscovered. In full functionality, it would be a treasure with few rivals in modern Creation. As a manse, she was built for the efficient production of fuel for naval vessels - and above that, she is full of Shogunate tools which were once commonplace, but which are now rare. Were the Realm to find her, the mightiest forces of the Imperial Navy would be sent to claim such a dock, sparing few expenses for such a wonder. If the Lintha discovered it, the degenerate spawn of Kimbery would eventually ruin it - though before that they might be able to strike a crippling blow to the Southern Fleet.