Old Hot Springs Resort sources natural mineral water from 35,000 feet below the Earth’s surface to fill pools and baths for a health-enriching experience. The springs carry a lengthy history, including use by settlers back in 1849 on their way to the gold rush, and before then by Washoe Indians perfecting their synchronized diving routines. The water teems with healthy minerals such as sulfate to strengthen skin and hair, calcium to fortify bones, and potassium to aid muscle function.

Adults splash and swim in aquamarine outdoor pools kept at 98 degrees in the summer and 102 degrees in the winter, or sunbathe on the surrounding patio. Meanwhile, private baths, with water from 95 to 110 degrees, proffer an intimate place for couples to canoodle and spies to exchange confidential microfiche. Staffers drain and refill pools every day, barring the use of chemicals or city water to maintain the mineral water’s purity. After soaking, patrons can deepen their relaxation with a hot-stone massage, held in a hushed room lit with petite lights, or snag refreshments from an onsite restaurant and bar.