Phrathat Nong Khai or Phrathat Klang Nam (พระธาตุหนองคาย หรือ พระธาตุกลางน้ำ) is a broken pagoda in the middle of the Mekong River. According to the legend of Urangkhathat (Phrathat Phanom), nine pieces of Buddha's foot were kept here. It was presumed that the pagoda was built around the 15th–17th centuries.