Forest

The most dangerous Territory for anything sub human to live. They have to be above ground, therefore they're much more likely to be found. So they have to be that much more creative with the way they live. Hiding in caverns, up in the trees, just because they're above ground does by no means make them weaker, or easier prey. If anything else, the forest makes its inhabitants that much more volatile.

Treetops:
Arguably the most dangerous of the sanctuaries, given that it is right above the ground - considered human land, and absolutely uninhabitable by the subhumans. Yet somehow, they've managed to figure out a way to cohabitate. Without the humans knowing, of course.

The Faerie Mound: The faerie mound is a gateway or a portal, to what one could only explain as another dimension, or world. It isn't as big as one would expect an entire world to be, but that is what it is.