Bastion

Bastion is a city designed to be unassailable. There are no gates, only encrypted portals that require a key longer than a man's life to open. The citizens are paranoid but free. They live behind walls of math, confident that no king or corporation can spy on their tea parties.

The architecture is brutalist and functional. Every window is barred with a grid of lasers, and every door has three locks. Yet, inside the houses, the people are incredibly open. They share everything—their recipes, their blueprints, their dreams—because they know that only those they trust can enter. "Open source," they say, "does not mean open door."

Travelers often find Bastion cold, for they are stopped at every corner and asked to prove their identity. "Who sent you?" the guards ask. "What is your public key?" But for those who pass the test, the city offers a rare gift: the silence of being truly unobserved. In a world of glass houses, Bastion is a fortress of stone.