The Atlanta Beltline is a 22-mile (35 km) long multi-use trail on a former railway corridor that encircles the core of Atlanta, Georgia. The Atlanta Beltline is designed to reconnect neighborhoods and communities historically divided and marginalized by infrastructure, improve transportation, add green space, promote redevelopment, create and preserve affordable housing, and showcase arts and culture. As of 2026, the Atlanta Beltline is recognized as the world's longest linear arboretum. The project is in varying stages of development, with several mainline and spur trails complete. Since the passage of the More MARTA sales tax in 2016, construction of the light rail streetcar system is overseen by MARTA in close partnership with Atlanta Beltline, Inc.