Built in 1941 for being the refuge of people who came to visit the Khao Din Wana Zoo and the people nearby in case that allied aircraft (US and UK) flew to bomb by emergency during the Greater East Asia War.
Later, after the war ended, there were changes such refuge by creating a mock mountain to cover it. It used as a chamois cage continuously before the Dusit Zoo and the Zoological Park Organization Under the Royal Patronage of H.M. the King would make improvements and develop shelters, as well as the surrounding area to use as the media presence and an exhibition on the story of the Pacific War and public bunker such as the present.
