Chachoengsao, also known by the provincial nickname Paet Riw, has an old history back to the reign of King Borommatrailokkanat in the Ayutthaya period. Most of the people have settled by the Bang Pakong River and along canals. "Luangpho Phuttha Sothon" is a center of faith of the people of Paet Riw. Cr.Wikitravel.