This diploma thesis deals with the institutions for spending leisure time of the youth up to the age of 18. Specifically, is focused on a selected institution dealing with the topic. The thesis is divided into two parts: theoretical and practical. In the theoretical part are provided general concepts and knowledges that relate to the issue of free time, children and youth, non-profit organisations and low-threshold facilities for children and youth. The theoretical part is based on study of professional sources used to understand the issue. The practical part is based on a research focused on the analysis of activities in low-threshold facility for children and youth Ponorka in Žďár nad Sázavou. The research is carried out by method of institutions analysis by Bronislaw Malinowski to verify the hypothesis. On the practical part follow an evaluation of the research, which lists the possible shortcomings surveyed institution and proposals for possible solutions to eliminate them or at least mitigate. The aim of the thesis is to evaluate the selected institution for the spending leisure time of young up to 18 years and evaluate if it meets a public purpose and mission.