Primarily, this paper strives to explain the term of urban regeneration through theory and examples, which in itself is not so broad term, but entails a much larger number of similar terms and processes that are closely related. The aim of this paper was to explore, present and explain the challenges and numerous problems faced by all cities, large, medium or small in the European Union or Europe itself, not only cities but all its surrounding and associated areas and at different society levels, economic, cultural and other social views. These problems can be encountered by everyone, regardless of the structure and other components of a particular city. In addition to the negative side and the problems, many available ways to combat these same problems are explained using various methods, projects, strategies, actions, etc. The most common form of this is direct cooperation between the city, its citizens and various EU institutions and funds which try to achieve the best results from the current situation that is put in front of the city and to put it on its feet and look into the future. In order to make it easier to understand all this, several positive examples from practice show all this through a detailed description of the problems that particular city faces and desired goals to be achieved and finally the results that are achieved in a given time period. Likewise, in order to be visually comprehensible, the examples are accompanied by pictures. All of the above is therefore carried out under the main „roof“, which is the European Urban Agenda, which is a form of cooperation between the state, cities, residents and various other investors to touch on social, economic and other issues and problems to overcome them with joint efforts.