Fun for all ages! I took Ethan here when he first visited St. Louis and we had a blast...It is a little harder the taller you are but as a 5'11" guy Ethan still was able to do almost everything. Our favorite parts are the 10-story slide, the rooftop with the school bus hanging off, and the skate park ramps on the 2nd floor!
You can take a ride up into the arch and/or check out the museum at the base.
Take a walk/run/bike around the park with any of its many trails or go check out the Art Museum, History Museum, The Muny, pedal boats, golf, or any of the restaurants!
Union station has lots to do from mini golf, a Ferris wheel, an aquarium, and indoor ropes course along with great food and drinks!
Games are held at Busch Stadium downtown. Or check out Ballpark Village to watch the game (located directly across the street from Busch)
Games are held at the Enterprise Center downtown.
Admission to the zoo is free and there are other activities for an additional cost if you want to do them like feeding the stingrays, taking a train or carousel ride, or going to the petting zoo!