An ideal city inhabited by 10,000 citizens; Citizens divided into three classes: artisans, farmers, soldiers; Land divided into three: sacred, public and private; Three types of criminal offences: insult, injury and homicide; First and second instance courts; Three kinds of judgment: guilty, not guilty, partially guilty; Possibility to change the laws; State maintenance of war orphans; Judges elected by the citizensâ€™ assembly. Hesychius ( Ippodamu nemesis) and Photius informs us that the architect Hippodamus, a native of Miletus, became a citizen of Thurii. He planned the city of Rhodes among the mid 5th to the end of the 5th century BC. Some architectâ€™s theoretical writings have been passed down to us by Stobaeus. In particular, in his treatise On happiness are a series of ideas worthy of attention as the conception of society as harmony between the parties. This concept back to the metaphor of the universe and the human body in which each element exists because there is everything. The Thueplanning scheme is this almost obsessive search of Symmetries and the relationship between the parts and the whole. The formal city planning of Thurii is this almost obsessive search of symmetries and the relationship between the parts and the whole. The city of Thurii is the materialisation of theoretical concepts formulated by Hippodamus. The seven plateiai that recall the number of strings of a lyre, the stable proportions of residential zones and the rigidly orthogonal street layout, are the most direct example of his ideal city.