The Underworld is the community of generally evil aligned beings existing in a strange twisted and, at points, overlapping subspace separate from the "Surface". Many races dwell in the Underworld and form cities at points where portals are close together. Portals interconnect the Underworld with the dungeons and other subterranean locations, but there are also tunnels interconnecting the cities. The general infrastructure can be likened to a web with the knots being cities and towns filled with establishments and dwellings of various races and creatures. Many cities have at least one temple dedicated to a Dark God with assorted clerical buildings and staff surrounding it.