It is interesting to note that Victor Hugo never wrote a novel called "The Hunchback of Notre Dame", this is an English translation of the original title which would better be named "Notre Dame of Paris". This title far better introduces the reader to the content of the book which focuses on a narrative around the cathedral rather than Quasimodo, the hunchback; in essence the book is driven by the location, not by the characters.
This, then, highlights the main drawback, for me, of this famous work of fiction, in that it dwells far too long upon the atmosphere of the cathedral and its surroundings in neglect of the plot of the book. It will have been said that this is a masterpiece of literature in the way it paints a portrait of life in this part of Paris at that point in history but in my opinion it takes far, far too long to get to the point and becomes very boring, a chore to read rather than a pleasure, a literary battle to even get to the point at which the Hunchback is intorduced. I have taken great pleasure in the past in novels which employ wide vocabularies and create an atmosphere through description but that was when it was done alongside a plot which, for great swathes of its pages, The Hunchback of Notre Dame lacks entirely.