Seojinju Spa Land is already widely known through word of mouth and for the natural sulfur alkaline water (PH8.6, hardness 48) that comes up from a 1,170m underground hole and the smell of natural sulfur in the bath. It is a spacious and comfortable hotel-type sauna with a total floor space of 3,966.96 m² (1,200 pyeong) where you can enjoy a variety of things, from various themed saunas to open-air baths with a view of the sky.