Public space is all around us, a vital part of everyday urban life: the roads we take to work, school or university, meeting and gathering places, places where children play, or where we meet nature and wildlife, local neighborhood parks. 
The present research topic is the open urban space from the point of view of bioclimatic architecture. The Research deals with public open space; squares, parks and green spaces, sidewalks, seafronts, etc. Rapid urbanization and the effects of climate change, however, have led to a marked degradation of open urban spaces. Public spaces often become places of exploitation of commercial activity, neglected, abandoned by the rags of time, used as parking spaces, considered as another plot for economic development. At the same time, the increasingly high temperatures in the urban fabric of cities have a negative impact on the comfort of open spaces. As a result, the development and construction of new productive urban open areas is crucial. The research seeks to present the variables that measure comfort, to study the various bioclimatic design techniques and strategies of these open spaces, to record them and to compile them in an atlas guide to bioclimatic practices. Various design techniques and strategies are researched in order to achieve thermal, acoustic and visual comfort in public open spaces while also dealing with their sustainability, examining the utilization of renewable energy sources. Finally, the study deals with the applications of bioclimatic techniques by presenting implemented bioclimatic projects in Greece with the aim of setting examples for future projects.