Harjukaupunki is a fictional city in Finland, created by author J. J. K. Kallio. It serves as the setting for various stories and narratives, often reflecting themes of community and nature. The name translates to "Hill City," which hints at its geographical features. The city is characterized by its picturesque landscapes, including hills, forests, and lakes. Harjukaupunki is depicted as a place where residents enjoy a close connection to the environment, fostering a sense of harmony and tranquility. The stories set in this city often explore the lives and relationships of its inhabitants.