There are more and more new development challenges emerging in Polish cities and regions recently. Because of those challenges we can observe an increase of the role of cities and associated environments. The concept of cities’ impact on the environment is a result of many processes, such as: suburbanization, reurbanization, increasing population mobility, development of transport systems, innovation, or entrepreneurship. A city is a complex entity, it is a subject to dynamic changes, to understand which we need interdisciplinary knowledge or the combination of many different approaches along with an attempt to draw many conclusions. We can find numerous theoretical examples describing city-regional environment relations in the literature. In general, these models explain the relationship between economically strong cities (metropolis) and the regions. However, there is not much literature and research explaining the nature and strength of relationships with medium-sized cities. There are also very few ideas for developing the potential of medium-sized cities in polish national policy. The aim of the article is to present disproportions in the development of medium-sized cities in voivodships of Eastern Poland in 2010-2017. The author will also present the possibility of using a synthetic measure to assess and recognize the spatial diversity of medium-sized cities development.
Experiences of subregional cities in programming of urban renewal. The aim of the article is to analyze and evaluate the experience of selected subregional cities in revitalization programming. At the beginning, the strategic policy of the state towards subregional centers was defined. The guidelines from the National Spatial Development Concept, the National Urban Policy and the Strategy for Responsible Development were pointed out. Then, examine in detail the activities carried out so far in 4 cities, which as a result of the administrative reform in 1999 lost the status of the provincial city, i.e. in Ciechanów, Legnica, Piła and Przemyśl. Current documents have been characterized, in particular, the specificity of areas covered by revitalization has been described. Next, the leading directions of transformations of these areas were presented, resulting from the adopted revitalization policy. This allowed for the formulation of certain generalizations about the specificity of the process of renewal of degraded areas in subregional centers in Poland.