This is a traveler's one-stop-shop for all things relaxing. The full-service day spa offers massages, manicures, pedicures, facials, waxing, and even haircuts. Located in Terminal C of the Newark Liberty International Airport in New Jersey, the spa is also green, built from eco-friendly and sustainable materials. Pop in for a 10-minute chair massage for $20, a foot-soak with 20 minute massage for $45, or stay for a while and get a full-on, deep-moisturizing Altitude Protection Facial for $65.