Portal (city)

A city portal is permanent version of the Portal spell used by mages that appears in a fixed spot in a city. They tend only to appear in cities possibly due to their large power requirements. The exact mechanism of how they work is not known.

Most city portals connect to other cities, but some connect to well traveled points of interest.

According to Barnaby Fletcher, these portals run all day and night and leak tons of magical energy. The energy crystallizes around the edges and is generally regarded as trash. In Dalaran, this is apparently thrown away and washes down into the Underbelly.