The Longères course at Golf de Chantilly occupies a historic estate in the Oise department north of Paris, set within the forested landscape that surrounds the Château de Chantilly. Tom Simpson designed the original layout in the 1920s during his prolific period of work in continental Europe, and Donald Steel later contributed modifications that refined the routing and updated certain features. The course shares its grounds with Chantilly's Vineuil course, together forming one of France's most established golf properties. The layout moves through mixed woodland and open parkland characteristic of the Picardie region, with mature trees framing many holes and natural elevation changes providing strategic interest. Simpson's design philosophy emphasized thoughtful shot values and green complexes that reward precision, and these principles remain evident in the routing. The terrain allows for varied hole corridors, with doglegs and approach angles that require course management rather than pure length. Golf de Chantilly has long served as a gathering place for French golf, hosting national championships and maintaining traditions that reflect the club's origins in the early twentieth century. The clubhouse and facilities preserve the estate character of the property, and the courses benefit from the natural beauty of the Chantilly forest setting. The Longères course offers a complement to its companion layout, providing members and visitors with a classic European parkland experience shaped by one of the era's most influential architects.