As everyone is probably aware, cities don’t appear out of thin air. People didn’t wake up one day to skyscrapers and sidewalks, buses and the constant buzz of people and activity. All elements of a city are meticulously planned and drawn out. This is the process of urban planning–the design and overseeing of a city's structure and processes. It sets up the bus systems, the placement of parks, buildings, streets, and sidewalks, and regulates historical and green spaces.