Osijek is a city often called the city of greenery or “Green city”. On the city surface of 169 km2, green surfaces cover about 300.000 m2, which have been described in this graduate thesis. In order to develop them, it is necessary to know the history of Osijek, its geographic and natural characteristics, which represent unavoidable factors in park culture development of this territory. City of Osijek is placed in the plain part of the eastern Croatia, on the right bank terrace of the Drava river and is situated in the territory of continental climate. Osijek is the only city in Croatia that has been historically spreading from periphery to its center, in order to create a “garden city”. With its longitudinal stretch in the east-west direction, by the Drava river, it built an envious complex ensemble of park architecture, which are connecting the main parts of the city. Those parks are: Promenade of Petar Preradović, European avenue, Park on the Ljudevit Gaj square, Park Zrinjevac (of Nikola Šubić Zrinski), Promenade of cardinal Franjo Šeper, Park of the king Tomislav, Park of the king Krešimir IV., Park of the duke Branimir, Park of the king Držislav, Park of the queen Katarina Kotromanić-Kosača and Park on the square of ban Josip Jelačić. The practical teaching performance in Nature and society in fourth grade is directed to an extracurricular class in the Sakuntala park in Osijek and it is also designed in correlation with other teaching subjects. Parks in Osijek represent a valuable cultural and park inheritance, which is why they need to be protected, cared about, used and written about.