The present article is the text of a lecture by Dr. Nathalie Blanc, geographer, at the conference of "Art, city, nature" which is publishing with a bit of summarization. This conference is the eighth meeting from a series of meetings with the title of "Phenomenology of urban landscape" which is held in the 1st of September 2016 by Nazar research center and with the support of Beautification Organization of Tehran. Nathalie Blanc is director of research at CNRS and director of LADYSS. She also teaches at the University of Paris 7-Diderot. She is specialist in the themes of "nature in the city" and "environmental aesthetics".
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