Frontier park hosts many annual events such as the Festival of the Little Hills, Riverfest-a Fourth of July Celebration, St. Charles Oktoberfest and many more! It is also a major trailhead for the Katy Trail State Park. The area that the park covers was the location of the campsite of the Lewis and Clark Expedition when it stopped in St. Charles for several days, May 15, 1804 through May 20, 1804, and on the return trip for one day on September 21, 1806.
Please check the website listed on each event to get the most up-to-date information.