Central–Mid-Levels escalator
The Central–Mid-Levels escalator and walkway system in Hong Kong is the second longest outdoor covered escalator system in the world, after the Wushan Goddess Escalator in Chongqing, China. The system covers over 800 m (2,600 ft) in distance and traverses an elevation of over 135 m (443 ft) from bottom to top.
Source: Wikipedia — Central–Mid-Levels escalator (CC BY-SA 4.0)