The Hall des Sources is the architectural centrepiece of Vichy's thermal district — a long, light-filled iron-and-glass pavilion that covers the main water dispensing area at the northern end of the Parc des Sources. The structure dates from the 1860s and sits in a direct lineage with the great Victorian glasshouses: cast iron columns support a vaulted roof that floods the interior with natural light, creating an elegant public space that functions simultaneously as a promenade, a pump room, and a gathering place.
Inside, attendants still dispense the various mineral waters from the springs beneath — you hand them a glass and they fill it for you, just as visitors have been doing for a century and a half. The different springs are labelled, each with its mineral composition listed. The water is free, the ritual is charming, and the building itself is among the finest pieces of nineteenth-century resort architecture you will find anywhere in France. Even visitors with no interest in thermal treatments will find it worth stepping inside.