Le Grand Mello hosts residential seminars, executive meetings, training programs and international company gatherings for 2 to 120 participants, with 101 bedrooms on site. It stands in Mello, in the Oise department, about 50 minutes from Paris and within easy reach of Paris Charles de Gaulle and Beauvais airports. The site is run by Châteauform, a company that specializes in seminar houses, and brings together two buildings a few meters apart: the Forteresse de Mello, a military citadel, and the Château de la Princesse, a romantic nineteenth-century house.
Seminars and company events
The house is designed for seminars of one or several days. Seventeen meeting rooms can be combined to fit the program, from a board of ten to a plenary of 120. The house team handles the organization from start to finish, and a host couple welcomes each group. A catalog of activities covers team events such as olympiads, a haka or an escape game. For evenings, the large Jeu de Paume hall serves as a setting for parties, and the Orangerie, under its glass roof, can be dressed in a company's colors for a product presentation.
Rooms and capacities
The largest room, 147 square meters, takes 120 in theatre layout, 88 at islands, 50 in classroom style, 26 around a U-shaped table or 18 around a boardroom table. The house counts nine modular rooms, an auditorium of 91 square meters with 44 seats, three informal rooms of up to 27 square meters for 10 people and four rooms with fixed tables, the largest of 104 square meters for 48. The interior salons offer quieter spaces to meet between sessions. All meeting rooms are fully equipped, and a room plan can be downloaded from the official site.
Accommodation
The 101 bedrooms let a group of 120 stay almost entirely on site. Leisure facilities include tennis, badminton, table tennis, volleyball, pétanque, bicycles, a hammam and a fitness area set in the vaulted cellars, as well as billiards, table football, pinball, arcade games, darts, karaoke and poker tables.
Catering
Meals are cooked by the house chef, who reworks French classics in a simple, generous style. The Orangerie serves as the dining room.
History and setting
The Forteresse de Mello is a former military citadel overlooking the village, and the Château de la Princesse is a nineteenth-century house that, according to local tradition, a lord of Mello built as a gift for his daughter. Together they form a site classified as a historic monument, with a park and nature around it. The house is known for its secret passages and historical anecdotes, which the hosts share with groups.
Getting there
Mello is about 50 minutes from Paris by road. The airports of Paris Charles de Gaulle and Beauvais are both close, which suits international seminars with participants flying in. Châteauform provides an access map on the official site.





