The buildings on the platform to the north of the Bot include the Library in the northeastern corner and a small chapel in the northwestern corner. The nucleus of this second or northern group of buildings is the Mahamandapa, a square pavilion erected by King Rama l on the site of the ancient Library which was destroyed by fire as soon as it was completed. This pavilion was built for the purpose of keeping the sacred Scriptures and was restored by King Mongkut (Rama IV). One should not fail to see in this Library the magnificent bookcase in lacquered teak inlaid with mother-of-pearl, which was made by order of King Rama l and is considered to be the best specimen of this kind of work.