The present paper is focused on a new possibility to resolve the problem of air purification in highly- urbanized areas through architectural and urban design. The aim of the research is to develop an architectural form as air-purifiers especially dedicated to Turkish cities, forms which will be integrate local tradition and high technology solutions. The forms are treated as events in the city to demonstrate the process of cleaning the air with use TiO2 The first part of the research includes studying local tradition in search of forms that will be understandable for the inhabitants and associated with Turkey. The second part of the research depicts possible usage of Titanium dioxide (TiO2) technology - nanoparticles of TiO2, as a building materials component. These components are the latest findings in the field of nanomaterials development, and their effectiveness due to the usage of the photo catalysis, which depends on eliminating various atmospheric pollutants and especially cleaning the atmosphere from nitrogen oxides. The result of this research is the design of energy efficient biomimetic architectural forms that can be a component of public space in every city in Turkey. In conclusion, the paper emphasizes the usage of titanium technology and local tradition, open a new way in architecture and structure designing in the urban public space. This is indispensable to improve citizens' health and to clear the atmosphere from nitrogen oxides or the volatile organic compounds and serves also as the basis to newly-built communities.