When human constructs the physical surrounding, a psychological environment of meanings is being created, accompanying the world of shapes and masses. Interventions into built environment affect the meanings extracted from the composition of the physical setting and the response of people to design strategies reveals the importance of them. The entrance spine of a city is important in creating an image of the city in the minds of the observers, and the protocol highway of Ankara introduces the city to other countries&amp / #8217 / leaders and visitors. So any intervention into this highway will affect the symbolic image formed. As such, attaching claddings onto visible fa&ccedil / ades of buildings in terms of beautification changes the appearance of the streetscape, and Municipality&amp / #8217 / s approach to fa&ccedil / ade improvement does not heed the prestige of this corridor / being an application rather than a well-advised project. This thesis aims to study the quality of the streetscape under the principles of design in terms of objective and subjective dimensions with respect to the physical characteristics of the setting and people&amp / #8217 / s interpretations from it, and the objective of this study is to question the success of this intervention with regard to solutions to improve the quality of the streetscape. To this end evaluative analyses are studied in the second chapter and the third chapter introduces a matrix of design principles. According to these evaluations, most design concerns are being underestimated, resulting in the monotony of the streetscape but the streetscape appears to be visually more ordered compared to the past.