It is only one of its kind a specific culturally educational institution in the Czech Republic. The Planetarium is located in a special central building constracted between 1958-61 according to a project of an architect J.Fragner at the edge of the Royal Park close to Výstaviště - Exhibition Area. A big projection planetarium is an attraction that in a projection cupole with a diameter of 23 m creates visual model of a sidereal sky spread out directly above onlooker´s head. The Planetarium organizes the astronomical, astronautical and geographical programmmes, special lectures, courses and exhibitions focused firstly on the children and the youth.