Auldnoir is a primarily residential area of brownstone houses. Kat's sewer home is located near the bottom of the district, and Aujean and Eugie's house is briefly seen as well, before being taken away in a gravity storm. The town is home to a post office, several small streetside vendors, and some larger homes to the northwest, one of which belongs to Melda.
The sky in Auldnoir is perpetually tinted red.
| Spoiler warning!|
This article contains spoilers about part of Gravity Rush.
In Gravity Rush 2, when Kat returns to Hekseville, she awakens in Auldnoir in the same spot as she did at the beginning of the first game. Exploring the town, she finds that it is largely unchanged, except for the large black buildings that are part of the city's new defense system, and for her house, which has been abandoned and filled with trash.
- Auldnoir's name likely comes from the English auld, a variation on the world "old," combined with the French noir ("black, dark"), which can also refer to the genre of crime films known as film noir.