Nixora
Nixora is a city built by tools that were built by other tools. No human hand has touched its blueprints. It is a place of absolute reproducibility. If a building collapses, it is not repaired; it is re-instantiated from the original code, appearing instantly and identically down to the last scratch on the doorknob. The city is obsessed with the "Speedrun"—the art of living a life in the absolute minimum amount of time possible, assisted by armies of bots that handle the mundane.
The inhabitants are yak-shavers. Before they can make a cup of tea, they must first refine the steel to make the kettle, but before that, they must mine the ore, and before that, they must design the pickaxe. They do this not out of madness but out of a desire for a "hermetic" existence, where every dependency is accounted for. They live in a state of suspended animation, waiting for their automated scripts to finish the preliminary tasks of existence so that they might finally enjoy the tea.
To the traveler, Nixora appears as a blur. The days whistle by in seconds, condensed by the "Tool-Assisted" logic of the city. Bridges build themselves as you step onto them and dissolve the moment you cross. It is a city of infinite preparation for a life that is over before it begins, a place where the process is the only product, and the yak is shaved clean down to the bone.