The Outland is the area outside the boundaries of City 17.
Since the outland is almost entirely forest, there should be no large settlements or towns. The only buildings that appear should be things like logging camps, warehouses, power stations and possibly small cottages. There are also several roads that connect some of the larger settlements. These roads should be small and disused, so no highways or main roads appear.
Forests and valleys, with the ruined Citadel and City 17 seen in the background.