In Reykir, you'll find two natural geothermal pool called Grettislaug, named after Grettir the strong and Jarlslaug. According to the Icelandic Sagas, Grettir was the strongest man in Iceland and used the pool to warm himself up after swimming from Drangey Island. The pools have great surroundings, amazing views with facilities such as showers, camping and a guesthouse at Reykir.