ESPA at Powerscourt, Powerscourt
Set in Enniskerry's new Ritz-Carlton hotel at the foot of Sugar Loaf Mountain, this 30,000-square-foot spa in slate, wood, and stone has views of the surrounding forest. There are 20 treatment rooms and a generous modern ensemble of saunas, plunge pools, and steam rooms. The two-hour Garden of Inspiration Body Ritual ($372) starts when your therapist brings you a cup of herbal tea and performs a footbath. A sea salt-and-oil body scrub follows, before warmed ESPA oils are poured on for an intensive massage (massages, $190).