Do Egyptian streets make sense? Apparently there’s a method to the madness. UC Berkeley’s urban planning scholar and geographer Geoff Boeing developed a method to visualize cities’ structures, or “logic,” that plots a city’s streets to explain their orientation and direction. Some cities, like Chicago and Beijing, have perpendicular and parallel grids that make it easy to follow a compass, while cities like Boston and Cairo have more complex and circular (hello, Maadi) grids. A similar interactive tool that works in your browser window was also created by Mapbox software engineer Vladimir Agafonkin.