Spurred by rapid population growth and mounting public and private investment, Jeddah – Saudi Arabia’s second-largest city – is on the rise. Since the early 1990s the population of its urban area has more than doubled, reaching 4.1m residents as of the end of 2015. While this growth has slowed somewhat over the past half decade, from a high of 3.4% in 2011 to 2.6% in 2015, rising economic...