Nevsky Prospect is portrayed in the story as a place of grate comotion with many waves of people moving at the same time at different hours of the day.  What is really striking about Nevsky Prospect is how it seems to be the setting for so many stories by Gogol.  Not only are the two stories of uriquited love within Nevsky Prospect set within the street but also the first scene in "Diary of a Madman" where the reader first begins to think of the main character as mad is on the Nevsky Prospect.  In addition at one point in the barber in "The Nose" goes to the Nevsky Prospect.  In short I think that what Gogol sees in the Nevsky Prospect is such a grand street that everyone must go there.