In the Republic of Croatia, in early and preschool education, in addition to regular programs, we also have alternative educational programs. These are educational programs according to the concepts of Maria Montessori, Rudolf Steiner, the Agazzi sisters, Jurgen Zimmer and Loris Malaguzzi. The paper shows how and what enabled the entry of alternative pedagogical concepts into Croatia. Each of them is then briefly presented and explained. The greatest focus is placed on Montessori and Reggio pedagogical concepts, which are the most popular and represented in our country. The historical development of each is presented, then some of the most important features and characteristics, and finally, what is the topic of the work, the role of space and materials in working with preschool children. Although similar at first glance, these two pedagogical conceptions have important differences, in terms of the spatial and material environment, the role of the educator or the role of the child during the upbringing and education process. Every parent wants the best for their child. This also applies to enrollment in the educational program. Many of them are not even familiar with the programs that are offered as part of regular kindergartens as special programs in certain groups or as separate kindergartens that work according to an alternative pedagogical concept. This is exactly why I think this topic is important, because adequate public information would enable parents to choose a kindergarten program that suits their child and is in line with their thinking.