Tirnanog Spa, Providence

In Irish legend, Tir na nOg is the land of eternal youth. Though not quite as otherworldly, Tirnanog Spa tries to capture some of that youthful effervescence with a bounty of spa services. Marine ingredients are the basis for many treatments such as seaweed facials, sea salt scrubs, and body wraps with re-mineralizing moor mud. Other treatments, meanwhile, take a more cutting-edge approach. Oxygen facials, for example, use pure oxygen to unclog pores, helping skin to breathe more easily and without wheezing, while microdermabrasion helps stimulate the skin's natural repair mechanisms, promoting better elasticity and improving tone.