Hong Kong is one of the most densely populated places on the planet, with more than 6,400 people packed into every square kilometer.
The city is truly a "skyscraper city. Many of its 7 million residents live in high rises, in everything from closet-sized spaces to sprawling apartments fit for billionaires.
German photographer Michael Wolf has captured the geometric beauty of these buildings in a series called "Architecture of Density." He was kind enough to share some of the images with us.
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