New York City's luxurious CORNELIA DAY RESORT is partnering with Iceland's Blue Lagoon Clinic to bring its renowned geothermal seawater-based treatments to the United States. The water contains minerals, silica and algae that heal and nourish the skin. The Balancing Mineral Soak and Body Therapy—just one treatment on the menu—includes a soothing bath filled with Silica Bath and Body Oil; a full-body exfoliation with the Algae and Mineral Scrub; a Mineral Body Mask wrap; and a relaxing massage with Silica Massage Oil. In any part of the world, that means pure relaxation and rejuvenation. —L.M.