As more people look to live in the city by any means they can afford, micro-unit apartments are popping up all over, fitting a kitchen, a bathroom, and a bed in less than 150 square feet.

There are a lot of storage tricks developers have learned to make these spaces more "livable," but the question of how livable remains. Business Insider pulled together 26 photos from Reuters photographers to depict the living arrangements of people around the world living in such tight quarters.

The photos contrast Seattle and New York residents living in 200- and 300-square-foot residences designed to make the most of every inch, with Hong Kong dwellers living in just 100 square feet. Some of the most extreme cases are called "cubicle homes," where the actual living space is just 25 square feet, not including space for a toilet and hot plate.

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