The thesis deals with brownfields in the Podkletí micro municipalities cluster. In the theoretical part, the work focuses on the basic terminology associated with the topic of the thesis, describes the most significant obstacles to the brownfields revitalization and different approaches in addressing this issue in the Czech Republic and in the selected foreign countries. Additionally, an overview of financial instruments to support the revitalization of brownfields, or reconversion, and methods of work are included. The analytical part contains characteristics of all identified brownfield sites in the Podkletí micro municipalities cluster. Based on the brownfield analyses and the given microenvironment, the particular sites are assessed according to their chances of an easy and fast recovery and readiness for the revitalization carried out by the small businesses. All brownfields are also evaluated in terms of their potential for different types of small and medium enterprises.