For a relaxing spa holiday, check into Grand Wailea Maui, A Waldorf Astoria Resort. Its 50,000-square-foot Kilolani Spa recently unveiled a $55-million makeover with 40 treatment rooms, gardens, and treatments and amenities galore including a hammam, Himalayan salt-infused, infrared saunas, and salt water and vitality pools. Enjoy Hawaii exclusives, too, from an Erewhon market to Dr. Rebecca Robbins’ sleep retreats and The Biostation’s anti-aging services.