After a long day of besieging steppe settlements, the Mongol hordes liked to kick back with a vigorous massage, a copy of the Daily Khan, and a nice warm glass of fermented yak's milk. Conquer your own serenity with today’s Groupon : for $10, you get an all-day pass to Herbal Spa Sauna & Salon (a $20 value).

Steamy saunas and cool pools at Herbal Sauna and Spa relax and detoxify bodies in a comfortable, women-only environment. Like a masterfully-played game of Candyland, the journey through saunas and baths is ordered strategically for optimal effect, beginning with a hot Jacuzzi dip to calm muscles and relax minds. A twenty-minute session in a steam sauna opens pores and releases toxins. While a scintillating romance novel heats bodies with unrestrained passion, the dry sauna heats cores with controlled 210-degree coals to optimally ease muscles. A cold bath refreshes heated cores, before cleansed pores and limber limbs meditate in a jade room. Friendly staffers stock locker rooms with complimentary robes, ice water, and shower products to ensure pleasant transitions to and from the tranquil retreat.