A 105-year-old railroad underpass between Inman Park and Cabbagetown that has become Atlanta's central street-art and graffiti venue. The walls and ceiling are repainted continuously by both invited and uninvited artists; nothing visible today will be visible in three months.
It is also the city's de facto community noticeboard: party flyers, weddings, political graffiti, marriage proposals. Worth a walk-through if you are on the Eastside BeltLine — it is a five-minute detour. Free.