The three storeys inside the elephant contain antiquities and priceless collections of ancient religious objects belonging to Lek Viriyapant who was the museum owner and also creator of the Ancient Siam and Sanctuary of Truth museums which stores artifacts and heritage items.

The museum displays important model sculptures which shows many facets of Thai culture.

The first floor contains a collection of Chinese vases from the Ming and Qing dynasties as well as the history of the museum's construction in photographs and wall placards.

The second floor houses precious antiques and arts including ceramics and European pottery.

On display are relics and statues of the Buddha from several eras such as Lopburi, Ayutthaya, Lanna and Rattanakosin.