Downtown boston is a bustling metropolis, in which the Viasoft tower and many entrance to the sewer, both mundane and otherwise reside. There are a number of paranormal occurences in it's streets, from elementals crafted from waste to men who snatch the breath from the lungs of the homeless for sustenance. As such, there is almost always a clerical patrol in sight, and even in the event that such a monster where to occur, there are any number of suitable spots for Buffsman (the slang term for the clerical unit leaders, called 'blessers' by the church.) to summon any help they may need to subdue it.
The streets are surprisingly devoid of the homeless, probably because all of them are either dead or have gone to the sewers, for a new life. (See Boston's sewer system)
The street system in boston is similiar to a maze, in that every street alternates direction, and all are one way streets with the exception of every twentieth street. All streets are perpindicular. There are also lots for every major complex (I.E. Viasoft Tower, the BCPA) that range in size from two by two lots to ten by ten lots. (For the City Park)
There are places to hide, and everybody knows that there are hidden tunnels that the thieves guild and other factions use for travel.