Built during the reign of King Rama VII and was a rectangular wooden building decorated with wood carving surrounding frieze. It is a semi-European art, has window surrounds, and gorgeous eye-catching colors. Her Royal Highness Princess Maha Chakri Sirindhorn honored the Architectural Conservation Award of the Year 2002 selected by the Association of Siamese Architects as the outstanding conservation building and outstanding organization of architectural conservation, currently uses as the office of "Zoo Lovers Society of Thailand".
