Hong Kong's Rooftop Slums An illegal rooftop house (left), and behind it an HSBC building It is perhaps no wonder that in Hong Kong- the most vertical city in the world, where land is a precious good, almost a luxury - slums don't grow in the outskirts, but on rooftops. The old, decaying buildings from the 1950s and 60s scattered all over Hong Kong may look unappealing to foreign visitors, who are likely to prefer the glamorous central districts and the numerous tourist attractions. However, there is something unique about those apparently unremarkable structures. Their rooftops reveal one of the most bewildering facets of the city: the co-existence of wealth and poverty, of monumental skylines and third-world-like skyghettoes in this world metropolis. I am lucky enough to share a flat with a Hong Kong artist, who gives me a lot of insights into the life of her hometown. A few days ago she told me that she would visit some rooftops with a group of French photogr