Seljavallalaug Pool

Seljavallalaug is a swimming pool built in 1923 into a narrow mountain valley in South Iceland, one of the oldest surviving pools in the country and long used by local swimming instruction before newer facilities took over that role. The pool is fed by a natural hot spring on the hillside above, giving it a geothermally warmed but sometimes uneven water temperature depending on where the warm water enters, and its long, simple concrete form sits dramatically framed by steep green valley walls on nearly every side. Reaching the pool requires a walk of about 15 minutes from a small parking area along a path that fords a shallow stream, adding a sense of arrival that most commercial geothermal pools lack. There are no lifeguards, heating controls, or modern facilities beyond a basic changing structure, and the pool is not regularly cleaned, so the water can appear cloudy or algae-tinted at times, a tradeoff visitors accept for the dramatic setting and free access. The combination of the pool's age, remote valley location, and old concrete architecture gives it a distinct, faded character that draws photographers as much as swimmers. A visit including the walk in, a swim, and the walk back takes about 90 minutes to two hours.