The apptly named Nature's Spa pool of Yallingup, located on Western Australia's rugged west coast, is a truly remarkable place. When the tide is right, the waves crash on the nearby offshore rocks and the overflow creates two waterfalls that feed into an otherwise calm pool of crystal clear saltwater. I could hang around at this spot for ages, just sitting in the pool and listening to the waves crashing in while getting a massage by the Indian Ocean.