Seljavallalaug is a stunning outdoor swimming pool located in South Iceland that dates all the way back to 1923. It is one of the oldest pools in the country and at 10 meters wide and 25 meters long, it was the biggest Icelandic pool until 1936. Visitors can swim in this beautiful pool for free, surrounded by amazing landscapes. Seljavallalaug has something for every traveler - families will love the fact that it's family-friendly, while those with an adventurous spirit will enjoy the unique experience of swimming here. With no admission fee and a 4.6 star rating, it's a must-visit destination in Iceland.