Aix-les-Bains [[ɛks lɛ bɛ̃]] (Arpitan: Èx-los-Bens, Latin: Aquae Gratianae), locally called Aix, is a commune in the Savoie department in the Rhône-Alpes region in south-eastern France.

Rising from the shores of the largest natural lake of glacial origin in France, the Lac du Bourget, this resort is one of the important French spa towns, and has the largest fresh water marina in France

 https://en.wikipedia.org/wiki/Aix-les-Bains

When Mark Twain took his family to Europe in June 1891, they went almost directly to Aix to enjoy the sulfur baths. He praised in lavishly in "Aix, the Paradise of Rheumatics", published in Illustrated London News and The New York Sun. (Rasmussen pg 6).