"at Combray with my great-aunt, at Balbec, Paris, Doncières, Venice"

This is a complete list of all the locations which will appear in the Search. Considering the length of the novel, Proust restricts the action to only a few settings, of which Paris, Balbec and Combray are the most important. By listing these places here Proust is literally 'setting the scene' for what is to come.