Ravnica is a vast city, covering the entirety of the world in many layers of construction, from deep sewers and catacombs to sky-raking spires. No single map can encompass the tremendous scope of its sprawl, and its borders (if it has any) are unknown. except possibly to those who live near the edges. The story of Ravnica focuses on its core. Sometimes called the city proper. this core is divided into ten districts, each of which is a huge urban environment in its own right. The districts are named in simple numerical order from the First to the Tenth. No correlation exists between the ten guilds and the ten districts; all ten guilds are active in all ten districts. The Tenth District, in particular, is a hotbed of activity where all the guilds maintain their primary headquarters.
