"Seawater Spa at Gurney's Montauk Resort & Seawater Spa offers a bathhouse experience with a caldarium, thermae baths, frigidariums, and one of the only ocean-fed pools in the U.S. It features floor-to-ceiling windows for ocean views, and the recent $20-million renovation modernized the facility while preserving its original seawater concept." - Travel + Leisure Editors