Soltherra spans roughly thirty kilometres across — a rough circle of granite buildings, elevated gardens, and underground infrastructure, all oriented around the central mountain that rises from its middle like a hinge. Five hundred thousand people live here. The stone they live in was cut from the same island they live on, which is why the city feels continuous: same material, different uses, stacked and arranged according to who needs what and who gets to decide.
The buildings are granite. The streets between them are granite. The mountain that holds the centre is granite. Against the grey sand of the coast and the dark rock of the outer wall, this produces an effect that visitors describe variously as imposing, oppressive, and, in the inner districts after the light-bearers come on at dusk, genuinely beautiful. All three readings are accurate. They are not in conflict.
The mountain at the city’s heart is not tall by the standards of the island’s interior ranges. It is large enough to be visible from most of Soltherra’s districts and to make climbing to its summit a noticeable effort. Atop it sits the Central Tower — a fortress of considerable age and significant weight. The oldest surviving structure in the city. Possibly the oldest thing in it that has not yet found a reason to leave.
The Central Tower’s function is administrative and architectural in equal measure. It is where the families who own the city conduct the business of owning it, which they do with the unhurried confidence of people who have been conducting the same business for a long time. The fortress is not open to visitors. The hill it sits on is not especially welcomed either. The middle and inner districts that ring the mountain’s base are aware of its presence at all times, in the way that any structure that could watch you inevitably does, regardless of whether anyone is actually looking.
The mountain’s slopes have been built up over centuries: terraced, paved, planted. The steeper faces hold some of the city’s most expensive residences — close to the centre, high ground, difficult to approach without being seen, which is precisely the attraction for those who can afford it.
The city’s most visible infrastructure is not the wall. It is the viaducts.
A network of massive stone arches carries water from the mountain’s reservoirs to every district in Soltherra — outer, inner, and underground. From above, the pattern would look like a spiderweb, anchored at the mountain and spreading outward. At street level it looks like arches crossing overhead at regular intervals, wide enough to walk across and high enough that most carts pass under them without the driver thinking about it.
The water they carry does not stop at street level. It runs under the districts too, routed into the underground passages through channels cut into the stone. Soltherra’s
The viaducts carry something else: light. Glass spheres mounted at intervals along the channels emit white light after dark, activated each dusk by a circuit of licensed lighters and dimmed each morning the same way, in reverse. This is the inner-district illumination. In the outer districts, the same principle applies to the street-level light-bearers — but there, the spheres run amber, which produces somewhat less light for somewhat less money. The budget reflects the priority. Those who know better say the priority reflects something else.
The morning circuit that marks the beginning of the
Soltherra is layered in the obvious way — and the less obvious one.
The obvious layer: as buildings approach the central mountain, they get taller. Outer-district buildings are flat-roofed and practical, one or two storeys at most, their rooftops given over to the elevated planting fields called
The less obvious layer is what the architecture communicates without stating. Where you live is what you are in Soltherra, and the stone makes sure you know it. A flat-roofed building in the outer districts does not mean poverty in absolute terms — there are prosperous outer-district households — but it means outer-district, with everything the city’s caste gradient loads into that word. A high narrow townhouse in the inner precincts does not mean good character, but it means inner-caste adjacency, and in Soltherra adjacency is its own form of currency.
The inner castes have built upward as a statement. The outer districts have built flat as a fact. The underground, which is where most of the city’s heavy labour happens and where many of the Casteless sleep, was not built as a statement at all — it was dug because the stone was there and the need was urgent. That it also happens to be invisible from the city’s better streets may be coincidence. Those who know better say the layout was reviewed at some point, and no changes were requested.
Communal housing and the distribution of responsibility in outer-district households is covered in Roles and Expectations.
A significant portion of Soltherra is below street level, which is something the city’s civic documentation mentions in passing and the city’s residents in the outer districts do not mention at all, because there is nothing unusual about it when it is your daily route to work.
Major underground passages run five metres high — high enough for carts, maintenance crews, and the occasional lifting frame move. Smaller connecting tunnels drop to around two metres. The network is not mapped comprehensively in any document the public can access, which has led to the practical situation where experienced residents know routes that official guides do not, and newcomers occasionally spend an extended period in what they describe, afterward, as a “wrong turn” that took some time to resolve.
The industrial facilities are down here: foundries with furnaces hot enough to melt metal, ore-processing yards, storage for the materials the caravan trade brings in. The work is hot, loud, and constant. The workers who do it are Lower Caste and Casteless, which is not a surprise to anyone who understands that proximity to the mountain is a reward and proximity to the furnaces is not.
Light underground is provided partly by the viaduct channels passing overhead, whose spheres cast glow through gaps in the stone. Where the walls are damp and the passages old, something else takes over:
Many Casteless sleep in these passages — not the industrial sections, but the older service tunnels and drainage routes beneath the outer districts. It is warmer than the street. The city does not officially acknowledge this arrangement, which is consistent with its approach to acknowledging the Casteless in general.
The full account of Thial moss — its colour range, its reaction to pressure, and why it is technically edible but nobody is recommending it — is in Flora.
The most common form of housing in the outer and lower-middle districts is the Oios: a large communal building structured around a central common room, a shared kitchen, and a shared bath, connected by open passages rather than internal doors. The passage arrangement is not accidental. A building designed so its residents can hear each other is a building that takes shared accountability seriously. Or one that makes privacy difficult, depending on your perspective and whether you are trying to have a private conversation.
Within an Oios, each resident may keep a private cabinet or small lockable room — an
Not everyone in Soltherra lives in an Oios. Inner-caste households are private residences, managed by staff, with the kind of internal doors that communicate that the occupants consider their business their own. The upper castes do not share kitchens. This is both a practical reality and, in certain circles, a point of considerable pride.
The common room in an Oios serves as a sleeping space at night and a common hall by day — the reconfiguration is practised and quick, a daily routine that residents treat with the efficiency of something they have done so many times it has stopped registering as effort.
The Oios morning routine — including the communal bath and the ongoing dispute about the fire — is covered in Daily Life.
For a city built from grey stone, Soltherra is remarkably colourful.
Buildings throughout the city are painted in bright shades — terracotta, ochre, pale blue, the deep red common in the middle-district merchant rows. Window boxes run the full length of residential streets, filling with flowers in season and dried arrangements the rest of the year. The overall effect, from a distance, is of colour pressed into the stone rather than laid on top of it — the city trying to contradict its own bones.
This is not an accident and not entirely spontaneous. Colour has been an outer-district habit long enough that it has stopped being a habit and started being an identity. The inner precincts have their own aesthetic: carved stone, restrained palette, the kind of architectural detail that communicates investment rather than personality. The difference is legible from across a district.
None of this changes what the buildings are built from. The granite is always there, underneath the paint, underneath the flower boxes, underneath the stucco that the middle districts favour to make ordinary walls look like something else. The city is beautiful in the way things are beautiful when they are trying hard. Whether the effort is being made for residents or for something else — for appearances, for the mountain, for a caste gradient that needs to look as permanent as the stone it is built from — is a question most people prefer not to ask on a particularly nice morning when the outer-district flower boxes are full and the light is good.
See also: Daily Life · Roles and Expectations · Flora · Geography · The Arena
© Soltherra RPG System