|“||The unspoken truth was that the union had commissioned the void cities as a permanent response to the colony worlds’ interest in building their own fleets. A void city couldn’t control a whole solar system, but it could command a ring gate.||„|
|— Persepolis Rising, Chapter 23|
Void cities are enormous settlements for residents of the system who would normally be considered within "Belters' dominion" and these cities are controlled by the Transport Union, each housing roughly two hundred thousand people. These cities were equipped to also serve as battleships, medical facilities, ports, and resupply posts.
During the Laconian attack on Sol the Void City Independence was destroyed during the opening battle.
Known Void cities
|Guard of Passage||Station/battleship||Books|
|Assurance of Peace||Station/battleship||Books||Never completed. Was abandoned when Heart of the Tempest approached when only half-built.|
- The Expanse Novel: Tiamat's Wrath, chapter 12 - Bobbie