Built in 1929 by Pierre Dupuy and called the "Grand Hotel du Mont Blanc" until 1939, this is the largest institution in Plateau d'Assy. It belongs to the group "compact".
Although its framework is made of reinforced concrete, it is built with classical materials and still belongs to the regionalist movement, which was abundant at the beginning of the 20th century. Its chapel, redesigned in 1961 by Henry-Jacques Le Même, is lit by a path of flagstones, mosaics and glass embedded in cement, made by Father Ephrem Socard, from the abbey of St Benoît d'en-Calcat.
