Avani (Ah-vah-ney)
The largest trade port of Levis and the the place most connecting the concepts of land and see, the endless and the darkness. Built upon a one way rift into the The well of possibility, the city crackles with chaos, and enough madness that magic is all but banned from the city without express permission and permits by the Dockmaster.
Originally constructed by mages with an immense fear of what leaving such a rent in reality would do, and then joined by people needing to explore and experiment, the city soon realised it sat upon currents that were perfect for setting up a supply line as they continued their experiments. When the Nocturne Empire annexed the archipelago the settlement sued for independance, mostly with the help of the Kingdom of Solaris.
The city boomed, with most of the biotech being constructed out of town and traded in, with minor developments locally in carved and treated gears and steam. The use of dead wood in and around the city is seen as distasteful, touching on the taboo, although lips are mainly sealed due to the prosperity of the city and the important position it has while sitting on the trade route.
The existance of the Rebellion has heightened trade in the last decade, with goods that woud have in the past just traded hands and cargo vessels, instead coming away with Whisperling made goods and boons from the settlement.
Not sure this is somewhere I'd like to visit. It sounds like you could feel the chaos in the air like a physical thing. It makes sense why magic is not really allowed here! Just a note - you have a double paragraph in the middle. :)
Explore Etrea | March of 31 Tales