Asphodel

Asphodel is a city is Fairyland made of stairs.

The buildings are massive staircases, with seven larger ones like skyscrapers and smaller ones for alleys and such, and each step is a house. People travel from step to step with the aid of black sleighs, which run on the bannisters to move about.

It is also the home of the Sibyl, who, instead of living in a staircase, lives in a elevator nearby.

It neighbors the Upside-Down, and houses the entrance to Fairyland-Below, which September seemed to notice, as she felt that the staircases where the kind meant to lead down, instead of up.