Auditorium today (courtesy of the Third Bureau, Office of the President)

During the Japanese occupation, the Auditorium was where important meetings were held, and was called the Conference Room. It featured a large, rectangular floor plan, while the ceiling formed a flattened arch, complemented by beautiful air vents and vaulted windows overhead. Classical columns originally supported the ceiling vaults. The walls, in the meantime, were adorned by marble wainscoting, with fabric wall coverings above, while the floor was composed of alternating dark and light stone squares set in a diamond pattern.