I was thinking possibly the mobile cities of Reeves’ Mortal Engine Quartet , but looks like the walking city idea has been used in science fiction since the 80s.
A walking city is a type of city that is created to avoid internal transportation, and therefore be small enough that a person can use walking to navigate the city. It is characterized by narrow, often winding streets. Its transport system is inherently egalitarian, with no one being disadvantaged by a lack of transport, unlike modern automotive cities. Walkability within areas positively impacts equity, sustainability, health, social benefits, less demand on other modes, economic developme Befor...