Wat Pho Chai 

A royal temple, located on Pho Chai Road in the Mueang Nong Khai Municipality. Luangpho Phra Sai, a sacred Buddha image of the town which is respected by the people of Nong Khai, is housed here. This Buddha image sitting cross-legged, which was cast from bright yellow gold in the posture of subduing Mara, has graceful features. According to legend, three daughters of the King of Lan Chang had three Buddha images cast and named each to associate with their names: Phra Soem, Phra Suk, and Phra Sai to the eldest, middle, and youngest siblings, respectively. Originally, the three images were housed in Vientiane. In the reign of King Rama III, they were invited to Nong Khai by boat. On the way to Nong Khai, Phra Suk was drowned by a storm. Phra Soem and Phra Sai were invited to house in Nong Khai. Later on, in the reign of King Rama IV, Phra Soem was taken to Bangkok. Phra Sai is still housed at Wat Pho Chai in Nong Khai. Every year on the full moon day in the seventh lunar month, the people of Nong Khai always hold a rocket merit-making fair or Bun Bang Fai to worship Phra Sai at Wat Pho Chai.