Unique Locations: Collection 04

From publisher blurb: Whether encountered on a quest, or simply found while traveling from here to there, feel free to add these unique locations to your next gaming session. Some are magical, most are mysterious, some are less-than-interesting. Locations include: The Cathedral whose arches may be planar portals Underhill, where something may have recently broken in - or out An underground Sanctuary in a destroyed city in the woods A lost city emerging from the sands of the desert