Wat Pho Chai is 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 crosslegged, which was cast from bright yellow gold in the posture of subduing Mara,has graceful features.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.