Wat Phra Pathom Chedi Museum (พิพิธภัณฑ์วัดพระปฐมเจดีย์) is located in the East of the church, housing artefacts and historical remains which were discovered during the excavations in Nakhon Pathom including the coffin and funeral ritual set that were used in Ya-Lei’s cremation ceremony. Ya-Lei is a dog very dear to King Rama VI but was shot and died. The King was much saddened and commanded to building of a monument for Ya-Lei as a token of his grief.