National Public Lands Day is traditionally the nation's largest single-day volunteer effort. It celebrates the connection between people and green space in their community, inspires environmental stewardship, and encourages the use of open space for education, recreation, and health benefits.

Saturday, September 23 marks the 30th annual National Public Lands Day. Gateway Arch National Park and Gateway Arch Park Foundation have teamed up for a day that recognizes how important green spaces are to our community. National Public Lands Day activities are free and open people of to all ages, with select activities open to pets.

Details are subject to change; please check in as the date gets closer!