Relâche Spa & Salon is the Forbes four-star spa inside the Gaylord National Resort & Convention Center at National Harbor, overlooking the Potomac River. It has 12 treatment rooms, a sauna, steam room and whirlpool, separate ladies' and men's lounges and a river-view relaxation room. Non-guests can buy a spa pass from $50, or a pass adding the indoor resort pool from $95, through ResortPass; spa hours are 10 AM to 5 PM.