“…People need to be able to move vertically in multi-layered cities, and this is also a crucial part of building connections between citizens and cities. González-González et al (2021)'s study on Santander in Spain suggested that vertical walking facilities (e.g., escalators, moving sidewalks, lifts) are highly valued in mountainous cities, especially for those connecting to residential areas. A network of bridges with escalator pathways and moving walkways lined with shops, cafés, bars, and restaurants in Hong Kong's Central area has been shown as a successful case to provide both passage and entertainment (Zacharias, 2013), and later to a nearby hilly area (Nagamune and Kinoshita, 2016).…”