This building, known popularly as the Colonnade, is located in the most central of the three parks, and is probably the handsomest structure in Contrexeville. With its red tile roof and its long line of stately blue and cream columns, it resembles some magnificent exposition building more than anything else. The bathhouse proper, which occupies a circular structure opening off the center of the Colonnade, is equipped with dozens of the most modern blue and white tiled bathrooms, spacious dressing rooms, showers, and a number of other rooms for X-ray and special medical treatment. The inner side of the Colonnade furnishes space for a long row of small shops, while toward the center, jutting out from the open side, a magnificent dome houses the Source de Pavillon.
[Hitz, Benjamin D. A history of Base Hospital 32, including Unit R. Indianapolis, 1922, p. 45]