Given that at the very mountain center one can find a Dino Park and an Adventure Park, there is always enough activity for children to stay occupied for hours with zip lines, horse riding, 6D cinema, and various playgrounds.
If that is not enough, you can always visit the El Paso City, another theme park that is open in 2020. Named after the border town in the United States, it also has a river that divides the American and the Serbian section. This is the place where one can find a cowboy town and an Indian village, next to Serbian traditional decorations.
For booking visit the El Paso City website.