Adelaide was built by immigrants such as farmers. The city is small, the streets and alleys are laid out in a grid, neat and beautiful, and the buildings on both sides of the street and the steeple church exude a strong British atmosphere. The quiet Dorrens River traverses east and west, and the whole city is divided into the north and south districts. The north district is a quiet and beautiful residential area, while the south district is a lively commercial area. The green belt, surrounded by the edge of the suburbs and the northern part of the city, such as a green necklace, has decorated Adelaide into a cozy capital.