Chantilly was also in the 19th century a playground for aristocrats and artists, as well as home to an English community with ties to horse racing. The first horse races were run in 1834 on the lawn area known as the pelouse, and the 1840s saw an influx of bettors of all social classes, especially from Paris. The success of the horse races was primarily due to the opening of the train station in 1859. Later, a public station allowed the arrival of up to 20,000 bettors and visitors on race days. A track and permanent seating were gradually added to form the racecourse in use today. Attendance records began to be kept just before World War I; 40,000 people attended the prix du Jockey Club in 1912.