The religious Institute of the Oblate Minimum of the Immaculate Heart of Mary, owner of the House, is an ecclesiastical Body of Diocesan right which was erected by Decree of the diocesan bishop on February 2, 1985, and recognised to all civil effects by Ministerial Decree on January 28, 1999. The presence of the sisters in the Aosta Valley region dates back from the early ' 900, years in which the little work for the sake of the child was born.
In the 1960s, a community of girls and sisters are guests in Valtournenche at the House of the Diocese of Aosta.
The Mont Blanc has undergone hours of contemplation of the sisters Amelia Pierucci and Giuseppina Sala (the founders of the religious Institute), hours of study and hours of joy to accompany the girls through the woods, along streams in summer holidays and winter trips. From 1975 to 2000 the group is housed in Villa Malina in the Verrand hamlet of Pré Saint Didier.
In 2001 the Oblate Minimum receives as a gift the House then named Notre Dame du Mont Blanc. The presence of the sisters on the territory becomes active with a house of their own. In 2003 the chapel was opened adjacent to the House, gift of dolenei.
The Holiday House offers accommodation for: Parish families, sports groups and corporations or special associations with religious institution for a period of rest, holiday of prayer. The Project-R-estate insieme ( stay together) in collaboration with the Associazione Aspert (Sport for all Association) summer activities for children of the educational communities of Centro Mamma Rita, Margherita Tonoli School of Monza, Campo Solare of Loana and for children residents: organized and free games, sport activities, guided activities. The project "Volunteers together" for boys and girls who have already had training experience with the sisters and/or educational contexts of Work and wish to continue to attend the House to contribute to the initiatives of animation.
The project CLASS OFF for Primary and Secondary school pupils of other regions through didactic lectures approach to sports, culture and traditions of Valle d'Aosta