This is Teletravel Incorporated during a normal work day.  The phone booth looking things are teleport machines and the signs inform customers where each machine will take you.  This drawing is larger than most I have done so far and will probably be a full page illustration if I ever get the story published as a book.  It took me a very very very long time, partially because I am obnoxiously perfectionist and partially because after I was done drawing I decided the whole thing needed more contrast so I went over it all again with charcoal pencil.