Everybody agrees that the City is quite large and consists of a number of walled and
gated districts. Although very few have ever attempted it sages agree that if you were to
walk constantly in one direction eventually you get back to where you started. Even stranger
if you attempt to fly high in the sky (and even fewer have attempted this because of the poor
visibility) eventually you find that up is down. There is therefore no way into or out of
the city except through its many portals.
Some have tried to burrow their way out of the City but this is an activity which is
strongly discouraged (as in you may get one warning if you're lucky). Sages say that the many
dungeons in the city are the result of pocket dimensions being created in the past and even
the sewers have been created in this way (which is why the smell in the city is at least
tolerable). To create such features today requires a license which is hardly ever granted.
There a number of canals in the City and in general even in the Slums fresh water supplies
never (or hardly ever) run dry. This is because all water in the City (say the Sages) is
magically recycled.