seated buddha in meditation pose & bell-d lanka-styled stupa chedi of wat sa si temple, sukhothai park

archaeological archaeology architecture arts artwork bell buddha buddhism buddhist central chedi classic classical complex department fine hall heritage historical kingdom lanka large middle monastery monument ordination park pond ramkhamhaeng reservoir ruins sacred shaped site spiritual sri standing stupa styled sukhothai temple thailand theravada theravadan trakuan traphang ubosot unesco vihara viharn wat water world