Freestone is the first and largest of the Great Lakes seacrete cities — a sovereign free nation grown from the body of Lake Michigan itself. It began in 2161, when a coalition of climate refugees, displaced academics, anarchist engineers, and people who had simply run out of continent built a wire-mesh framework twelve nautical miles off the Wisconsin shore, dropped it into the lake, and ran electrical current through it. The principle is electrodeposition: pass low-voltage direct current through a submerged conductive framework in mineral-rich water, and dissolved calcium and magnesium carbonates precipitate onto the mesh, building up layer by layer into a material harder than concrete. The pioneers called the process seacrete — mineral accretion, the same chemistry that builds coral reefs, accelerated by human engineering. Marshall T. Savage described it in 'The Millennial Project' as a way to colonize the oceans. The Freestone founders used it to escape the corponations.

The city grew the way coral grows: slowly, organically, and in every direction. The original framework was a flat platform roughly the size of a city block. Within five years, it had accreted into a multi-level structure with subsurface foundations reaching thirty meters down to the lakebed. New frameworks were attached to the edges and submerged; the current was extended; the reef expanded. Solar arrays and wave-energy converters powered the electrodeposition continuously. By 2180, Freestone was a floating reef-city of 340,000 people, roughly two kilometers in diameter, with docking platforms, desalination systems, hydroponic farms, workshop districts, and residential warrens grown directly from the lake's own minerals. The structures are rough-textured, organic, vaguely biological — walls that curve like bone, archways that look grown rather than built, surfaces encrusted with the mineral patterns of their own creation. It looks like someone taught a coral reef to be a city.

Freestone's sovereignty is a legal accident that became a political fact. The original platform was anchored in water deep enough to be outside any state or corponation's territorial claim — the Great Lakes sovereignty framework, written by corporate lawyers for corporate purposes, never anticipated that anyone would build a nation in the middle of the lake. By the time GLMZ's legal apparatus noticed Freestone, it had 50,000 residents, its own desalination infrastructure, a functional economy, and enough defensive capability to make forced removal expensive. The Corridor Council issued seventeen non-recognition declarations between 2168 and 2175. Freestone ignored all of them. The corponations tried economic blockade; Freestone traded with the other lake cities instead. They tried diplomatic pressure; Freestone's elected council responded with a one-sentence communique: 'We grew this from water. Come take it.' Nobody did.

Governance is direct democracy mediated by rotating councils. There are no corporations on Freestone — the founding charter prohibits sovereign corporate entities within its waters. The economy runs on a labor-credit system internally and trades in Q externally, primarily exporting seacrete construction expertise, desalinated water, aquaculture products, and a fierce independence that the shore-based population finds either inspiring or irritating depending on their tier. Freestone is not utopia. The housing is cramped, the infrastructure is perpetually strained, the mineral-accretion walls sometimes grow in directions nobody planned, and the democratic process is exactly as slow and frustrating as democracy always is. But nobody here answers to a board of directors, and that fact is worth more than comfort.