Gigantic outdoor escalator In Medellín, Colombia - in pictures
Medellín is Colombia’s second-largest city and was once the murder capital of the world, but a regeneration plan has resulted in an innovative mass-transit plan. The mountainside slum of Comuna Trece was too steep for vehicles and residents had to walk the equivalent of 28 storeys to reach it, but the installation of a 385-metre outdoor escalator has made life considerably easier