Châteauform Le Grand Mello in Cires-lès-Mello, Oise, comprises two historic châteaux—the "Forteresse" historic citadel and the "Princesse" romantic 19th-century mansion—set just one hour from Paris near Charles de Gaulle airport. The venue features extensive meeting facilities including a plenary room for 120 guests, two auditoriums for 44 and 54 participants, and 14 breakout rooms. Recreational amenities include massage facilities, hammam, Turkish bath, billiards, table tennis, tennis courts, badminton, cycling, and archery, making it a comprehensive destination for corporate conferences and team-building events.