An adaptation of the City of Glass from the Elemental Plane of Water for D&D as described in The Codex of the Infinite Planes by Dave Coulson.

Top tier is the Royal District including the Glittering Tower for the Azure Council and a castle for visiting marid.

Center tier is the Crystal District, which includes a large population of craftsman and many large guild houses and trade companies.

Right tier is the Tide District, home of the cities massive warehouses.

Bottom tier is the Flow District. This tier includes an entrance zone where portals from other planes are collected and visitors are held until they pass inspection from the Knights of Glass. A giant marketplace awaits them as they exit the holding zone as well as housing and services for travelers, transients, and non-mercantile guilds.