Early cities were mostly formed around places with easy access to water and food or places that provided protection such as hills or islands. In this sense, cities were formed by accident and were never planned. But as humans evolved from hunters to gatherers and then to growers, their living spaces changed. Their infrastructure improved and became more planned for the smooth functioning of a fast-growing civilization. Through constant improvizations, infrastructure developed to include waterways, sewage, roads, trolleys, gas, and electricity. Centuries later in the present world, human minds are designing cities as a whole. Brilliant minds of scientists, psychologists, environmentalists, and many more are collectively creating more cohesive, happy spaces in sync with nature. Cities are getting more environmentally sound, fun, and beautiful. High tech materials, sensor networks, new science, and better data are all letting architects, designers, and planners work in a smarter and more precise way. From water-sensitive urban designs to self-cooling buildings, from city blocks to hexagons, read further to explore this amazing world of future cities.