Active Jerusalem- Is it Only in Israel?

I don't know for how many years this has been happening, but it's not new.  It looks like a sports summer camp is going on during school vacations in the large open plaza of the Jerusalem Municipality.

Last week it was basketball, and this week I saw all these bicycles, though I missed seeing them in action.

Does this type of activity happen in other cities, right in the center of the municipal office complex?