It may be inside the buzzing MGM Grand Detroit, but there isn’t a better place to unwind than at the serene IMMERSE Spa. The facility boasts a well-equipped fitness center, indoor pool and full-service salon, but the real beauty of this spa lies in its restorative treatments. From ancient bathing rituals to purifying sea foam facials, this spa uses marine-based products to detoxify and revitalize. Guided relaxation and Japanese tea ceremonies accompany Immerse’s signature rituals, which include customized facials and hypnotic massages.