The city of pipes and light is in the Byzant Empire
While travelling through an unfamiliar area of the city at night, it it easy for one to become quite lost. Though this is an upper-class residential neighbourhood just east of downtown, the streets wind, twist, and turn in upon themselves in a rather chaotic fashion.
The wealthy landowners of Ardales began to grow personal gardens on their flat rooftops. The shade helped cool the buildings. The competition renewed among the aristocracy for the lushest garden. Over time, the increased population caused an increase in building density, especially in the city’s heart.
The work is being done on the largest temple of Stryfe ever constructed. So massive is this project, that it could not have been placed within the city’s walls without displacing a large portion of Gnopolis’s inhabitants.
A nifty little encounter appropriate for any powerful sorcerer/magically adept monsters lair.
When the party have penetrated to an appropriatly impressive level/room they encounter The Door, this door is a vessel through which the Sorcerer/Monster can safely work against any intruders, the door is heavy duty iron bound studded oak wrought with craft skill and magic, set in the middle is a crystal orb, once the party get within a preset distance the orb flickers briefly as the door warns its "master" of the intruders, the master can then effectivly possess the door itself, this means that all movement the door is capable of (i.e. opening and closing) come under the control of the master, the master can also cast spells from the door as if he were there himself, all the while any damage that is inflicted in return merely damages the door, this will in effect ruin any of the parties chances of surprise, allow the master to assess the parties abilities while remaining safe and sound and finally will probably cause the party to waste some of their juicier items/spells on a chunk of wood and iron, and if the master happens to have a deadly spell or three it could also reduce the size of the party,
Of course if you wanted to be really nasty you could have the door open to admit one person and then slam shut on the second person (squish) whilst blasting away with every spell in the mastrs repetoir