‘A geographical area characterized both by a physical individuality and by the cultural characteristics of the people who live in it.’ (Zorbaugh in J. Lin and C. Mele 2005). Most cities contain numbers of natural areas which are delimited by informal boundaries, such as canals, parks, railways, rivers, and main roads. ‘Culture is the agent, the natural area the medium, the cultural landscape the result’ (C. Sauer 1925).