I've been looking at these drawings of the Autopia project by the late great Wolf Hilbertz
Autopia was a project for an independent island, based on Hilberz's sea-cretion, the electrolytic deposition of sea-shell-like minerals from seawater that creates a construction material.
Autopia Ampere involves deploying house-size wire frames connected to large floating solar panels on the Skerki Bank, in the Mediterranean Sea between Italy and Tunisia, where the island will be built/grown. Autopia will house 5000 inhabitands
images thanks to the fantastic Radical Nature catalogue