Ben Sack , and his incredibly intricate cityscape drawings Artist on Tumblr 'Concrete jungle', 'urban sprawl' and 'human zoos' are some of the disparaging names we give to cities. And yet since 2010, for the first time in human history, the majority of the world’s population lives in a city. Cities are a microcosm of the world but at the same time each one is different with its own unique architecture and layout.