An interesting circumstance

I live in a big community. There are lots of young couples with their babies. Most of these couples are office workers. When they left home for work, their kids were taken care of by grandparents or a nanny. In all of the sunny days, you can see lots of these kind of combinations of grandparents or nanny with someone else's children, all across the square. When you walk through it, you couldn't help but think: My! Am I in a kindergarten or children's park?