Knabenschiessen is a traditional target shooting competition organised by Zurich's marksmen club since 1899. Originally the participants could be only young boys, however since 1991 it was extended to girls too. Year by year about 5000 kids take part in this event held on the second weekend of September. Visitors watching the tournament can also enjoy various activities in the amusement park. You can find more information in German on the official website.