A three-kilometer stretch of reclaimed Lake Michigan shoreline north of the old Evanston boundary where centuries of industrial glass waste, slag dumping, and subsequent geological pressure have fused the lakebed shallows into vast planes of cloudy, greenish sea-glass. At low water cycles — when the lake's managed sluice gates drop the shoreline level — the exposed flats catch GLMZ's tower-glow and scatter it in thousands of fractured directions, creating an eerie, beautiful light field visible from Spire observation decks on clear nights.

The Vitreous Banks are officially designated an environmental remediation zone under a dormant Palladian Group land-use agreement, which has kept heavy development at bay while simultaneously preventing any legitimate community from establishing permanent roots. In practice, the Banks host a transient population of salvagers, off-grid artists, and Tier 1 refugees who've built precarious stilt settlements in the shallows, trading in sea-glass artifacts, filtered lake water, and whatever bioelectric components wash ashore from Zheng-Dao's offshore processing platforms.