The research discussed the theoretical concepts related to beauty in general and the aesthetics of urban formation in particular, which is concerned with the interpretation of sensory perception of the aesthetics of visual formation and the perception of the urban environment in its functional and intellectual dimensions. The research also discussed the different approaches to explain the visual formation or the image of the city, in order to derive the criteria for measuring the performance of the aesthetics of the urban formation of the city centre, which was based on the eleven Edinburgh criteria. The research added a new criterion representing modern technologies and smart materials to become twelve criteria. The research was able to analyse the main criteria into a set of sub-criteria with 76 criteria, then extract their characteristics and performance indicators (KPIs) for each criterion with a total of 291 indicators. The relative weights of these indicators were also calculated in a mathematical way based on the frequency of the indicator through the analysis of (9) experiments (including 5 global & 4 regional). These indicators were established to produce the proposed model for measuring the performance of the aesthetics of urban formation, which is the main objective of the research, and it was tested by applying it to the Egyptian experience on city centres of different generations represented in the 6th. of October, Al-Rehab, the New Administrative Capital and Madinaty. The performance ratios were: Al-Rehab 81.69%, and the New Capital 80.70%, Madinaty 69.35%, and 6th. of October 69.00%.