Alreirsoar

Alreirsoar is a fire giant city.  Pretty damn hot and dangerous place if your not a fiery brute like a salamander, fire archon, hell hound, fire giant, fire troll (oh how I miss that monster from 2nd edition - believe it was in a dragon mag), or red dragon.   The city is sited between two volcanoes.  The volcanoes are linked by a Great Wall, one called Yorthrun Tor.  The marvels of  engineering don't end with this wall.  Two lava river, one from each volcano, join in the city.  Lava is diverted through canals and enormous statues, which turn into great lava falls.  The lava cuts through the center of the city and into an enormous fiery lake.  It doesn't end there, how could it, the lava would either keep flowing into the lands, probably exhausting the volcanoes, or harden as it lost temperature - oh no, the lava goes into drains.  It is then diverted through underground canals back to the volcanoes where one day, probably years later, that same lava will again flow through the wondrous city of Alreirsoa.