On September 28, volunteers and outdoor lovers will spread out across the United States to celebrate National Public Lands Day in the places they love best. Celebrated every year since 1994, National Public Lands Day holds the honor of inspiring the most American volunteers for a single-day effort. According to the National Park Service, the day “celebrates the connection between people and green space in their community, inspires environmental stewardship, and encourages use of open space for education, recreation, and general health.”