The outer part of the ubosot's door panels is exquisitely decorated by a mother-of-pearl inlay, depicting the Ramayana story. Meanwhile,the inner part illustrates the emblems of honourable monks. What makes this ubosot special is King Rama I's royal ashes, which were buried underneath the throne of the revered principal Buddha Image, Phra Buddha Deva Pratimakorn. On four sides of the ubosot, there are four traditional Thai-style buildings called "vihan thit