The museum is within the grounds of Wang Chan Kasem (Chan Kasem Palace), built for King Rama IV at the site of a palace used by King Naresuan and seven subsequent Ayuthayan kings. The museum is large, but the collection (Buddhist art, pottery, ancient weapons, lacquered cabinets and original furnishings) isn't – the highly decorated buildings themselves are the main attraction. The tower out back was used for the king's astronomy hobby.