- This event has passed.
The Great Mississippi River Cleanup
The National Park Service invites members of the community to help beautify the St. Louis Riverfront by joining in a riverbank litter pickup. Participants are to meet at the bottom of the Grand Staircase, located below the Gateway Arch along Leonor K. Sullivan Blvd. Bags and gloves will be provided. You can fill out the required registration here. Participants will receive a free T-shirt, breakfast bagels and coffee.