I enjoy finding these villages, especially the spawners! Even with being pretty careful and surrounding the structure walls with a layer of stake fencing, they will start to chew thru the walls to get to you if they become aware of you inside as you approach.

In the swamps I often run across standing stones in a circle with 2 skelly, 1 Draugr spawners in them, so in some stone structures in the swamps; really enjoy finding the world spawners around the map...