Where does "The Count of Monte Cristo" take place?

In the exposition of "The Count of Monte Cristo," the setting is  Marseille, France, in the south of the country on the Mediterranean coast.  The prison, the Chateau d'If, is off this coast, as is the Isle of Monte Cristo.  

Later, after he gains freedom, Edmund Dantes travels extensively to the Far East and other exotic places in the Middle East.  Years later when he has the information he needs to enact his revenge, Dantes returns to France, particularly the Parisian area where his enemies reside during the brief time that Louis XVIII has regained the throne from the exiled Napoleon Bonaparte. There is also some action in Rome, as well.