The Blue Lagoon

The Blue Lagoon near Grindavik.  This is a place where the bath-warm waters are filled with rejuvenative silica, blue-green algae, and tons of minerals.  The milky blue-green water is created when super hot water from under this spot mixes with sea water.  The "bad" bacterium can't survive in this cocktail and the water in this natural pool cycles back out to sea completely in 40 hours, so no need for chlorine.  Since it's dense with nutrients, you can float on your back in the warm sun and let the water exfoliate (though a nice natural silica mud masque taken from the bottom of the pool helps) your skin.  GOOD LIVIN'