Though located in a traditional New England country inn, the White Barn Inn Spa delivers minimalism without compromising luxury. Guests can request a light-of-the-moon plunge, which is a fizz of marine pebbles infused with mandarin orange and lemon essential oils, or an aroma sea bath. The nearby Kennebunk River provides the materials used in the spa’s signature stone massage, while natural marine algae and Maine sea salts are incorporated into the body wraps.