Thermes Marins Monte-Carlo Spa, thermesmarinsmontecarlo.com. Courtesy of Societe Des Bains de Mer.
Thermes Marins Monte-Carlo Spa, thermesmarinsmontecarlo.com. Courtesy of Societe Des Bains de Mer.

As a prelude to lounging in the hammam at this recently remodeled spa—an old haunt of Grace Kelly’s—I’d indulge in the Gold & Champagne treatment, which includes a luxurious bath, a gold-infused scrub, and a collagen body wrap.