In this paper we present an outline of a newly started project to develop a city generator for use in urban planning. The aim of the project is to develop a rule-based system which is capable of generation lookalike cities. Lookalike cities are cities which resemble real life cities without being an exact copy of it. A city consists of several zones; each zone has it own identity. In order to generate lookalike cities, these zone-identities need to be capture into rules which the system can ‘read’