In Saint-Bon, tourism activities began first in summer at the beginning of the 20th century. At that time, the mountain economy was based on cultivation, breeding and cheese production. But it started to change with the arrival of electricity production in our valleys that permitted the setting up of industries directly close to the power station (because we didn't know yet how to transport hydroelectricity at that time).
At the same time, the development of railway lines, to serve our industries, permitted the arrival of the train in Moûtiers. Thanks to this easiest and fastest access to our valleys, the first summer holidaymakers, often coming from Lyon area, came to spend their summer holidays in mountain. They took advantage of the beautiful landscapes that the valley of Bozel has to offer, to come in thermal cure in Brides-les-Bains. During their stay, they were numerous to reach Saint-Bon, a village situated at 1100 meters of altitude, in order to have an air and rest cure. For them, it was also the occasion to discover and to enjoy the beauty of mountain pastures and mountain lakes in Saint-Bon.
The arrival of the first summer holidaymakers in Saint-bon gave an idea to an inhabitants of the village, Agathe Curtet : to open in 1908 the first guest house of the village, the "Chalet Curtet". This cafe restaurant became quickly the Lac Bleu Hotel.