Pride and Prejudice

The topography covered by Pride and Prejudice is remembered mainly for Elizabeth Bennet's journey to Pemberley, a house in the Peak District of Derbyshire which is usually thought to be modelled on Chatsworth, one of the homes of the Duke of Devonshire (aristocrats often had major seats in counties other than those referred to in their titles). Chatsworth was much grander than Pemberley, but the association fits very well since already when the novel was written wealthy people were making tours to the Peak District and the Lake District.
The other salient geographical dimension of the novel is the elopement of Elizabeth's flighty sister Lydia from Brighton with the rakish Mr. Wickham. It is at first thought that they intend to marry at Gretna Green in Scotland, but they are quickly discovered to be living in slovenly quarters in London.
Less dramatic is the visit made by Elizabeth and Jane to visit her friend Charlotte Lucas (now the wife of the Reverend Mr. Collins) at Hunsford Parsonage (imaginary location), near Westerham in Kent, next to Rosings Park the (imaginary) estate of Lady Catherine de Bourgh. This journey is broken in London at the house of their Uncle and Aunt Gardiner, people of "low" mercantile connections who are nonetheless some of the best-hearted people in the novel.
The main centre of activity is the estate of Longbourn in Hertfordshire. Like many places in the book this place cannot be precisely located, and seems largely an imaginative composition which uses elements of Austen's experience of various places. Austen had no known intimacy with Hertfordshire but the location is located either east or west of the main road from London to the north, 24 miles from Gracechurch Street in the City of London.