Expose only a specific content type to Views
You want to add a filter to your view that is a content type filter, and then select "only show" and check off "Region" in the checkbox list.

So, edit your view, and on the left under "Filter criteria" click add.  Then, scroll through the list of available fields to filter on and find "Content: Type", check that off, click "Apply".  Then, on the left, select "Is one of" and on the right in the checkbox list select "Region", click "Apply".

After you've done that you can save your view.  The changes should be applied and should be showing only nodes in the view that are of type Region.