Terme de Saturnia - Italy
About an hour south of Siena, you'll find the terraced hot springs of Saturnia, set amid olive groves and vineyards in Southern Tuscany. According to legend, the springs were created when an angry Saturn thrust a lightning bolt to earth, releasing hot, sulfuric water. Whatever the cause, the series of white, rocky pools are perfect for soothing away all your pains.
Photo courtesy of Pommiebastards