Senlis is a commune in the northern French department of Oise, Hauts-de-France. The monarchs of the early French dynasties lived in Senlis, a…Senlis is a commune in the northern French department of Oise, Hauts-de-France. The monarchs of the early French dynasties lived in Senlis, attracted by the proximity of the Chantilly forest. It is known for its Gothic cathedral and other historical monuments. Its inhabitants are called "Senlisiens" and "Senlisiennes".