Menzoberranzan is a large city in an underground cavern about 4 kilometers from east to west and 2 1/2 north to south. 10 square kilometers of city is a lot to build, but I have a lot of experience with what goes into a mega build like this. The USS Enterprise project is still going strong, a city packed into a space ship hull.
I've written too much text. Pictures say a lot more. There is not all that much progress yet but these are the major structures that are present and areas that might be recognized by those interested in Menzoberranzan or Dungeons and Dragons in general.
Overhead Dynmap, click here!
House Do'Urden
Narbondel (the giant pillar the drow use to tell time)
Mushroom grove fields (these will have a variety of sized mushrooms)
Overhead view of House Baenre
Sorcere, school of wizards
Arach-Tinilith, temple of Lolth and school for her priestesses
Melee Magthere, school for fighters
House Oblodra, the house that was destroyed by Lolths giant tentacle avatar and Baenre
Donigarten, and the Isle of Rothe, the area around which is the cities agriculture
Don't forget to view the perspective view on the Dynmap!