This is Rama V's state temple. Rama VII, however, renovated it and considered it his state temple as well. It has been labeled the  " temple of fine penta-chrome " because all main structure in the monastery: the ordination hall, the image hall, the pagodas, the gallery, and the pavilions, are all decorated with fine five-color chinaware.
The ordination hall, in particular, is in the Gothic style, believed to have emulated one royal hall in the Versaille in France . An image called Phra Angkhirot is placed on the base made from an Italian marble slab to contain the ashes of Ramas II, III, IV, V and VII.