 This market was the site of the "Grande Boucherie", the main meat market of the city.The most important market appeared in 1137 when Louis VI purchased a piece of land called Les Champeaux not far from the Place de Grève to create a grain market; over the course of the Middle Ages halls for meat, fish, fruits and vegetables and other food products were built around the grain market, and it became the main food market, known as Les Halles.It continued to be the main produce market in Paris until the late 20th century, when it was transferred to Rungis in the Paris suburbs.