Toulouse is a commune in the southwest of France, prefecture of the Occitanie region and the Haute-Garonne department, as well as the seat of Toulouse Métropole. Its inhabitants are called Toulousains and Toulousaines. In 2021, Toulouse is the fourth most populous city in France, with 504,078 inhabitants.A city with architecture characteristic of the cities of the South of France, Toulouse is often nicknamed “the pink city” because of the color of the traditional local building material, terracotta brick.