Maison du Lac Maison du Lac is intended to inform the public of the protection and management of a natural aquatic environment. It is the largest freshwater aquarium in France, and home to over 40 species of fish. Pike, trout, perch, char, eel, carp, catfish and more are all kept here. Address: Petit Port Aix-les-Bains France 73100 +33 4 79 61 08 22