In Sweden is not unusual for parents of small children to take 6 weeks of summer vacation.
I'm having 6 weeks this summer but I'm in-between jobs.
Other either ask for unpaid days or they use some of their saved parental leave. Your employer can't deny you parental leave.
I'm in Canada and looks like most of my colleauges don't take 6 weeks away. They try to send their children to summer camps for the summer break.
But it would really be nice if you can have 6 weeks off in summer and maybe 3 weeks off during winter. A lot of things can happen and you can learn new things.