The landscape only determines the graphics you see near the horizon, it is purely cosmetic. There are only a few available and it's a good bet you won't find your city there. I usually select Mars, since it doesn't obscure much of the sky and has good performance.

The positions of the stars, however, are not determined by landscape, but by location (its longitude, latitude and elevation). This is what is meant by "exactly what you see when you look at the stars": the positions of the stars in the sky (at a given time and location) should match the ones you actually see in real life. If you are lucky enough not to have too much light pollution.