The spot was where coup leader Colonel Phraya Phahon Phonphayuhasena, who would later become Thailand’s second prime minister, read out the first statement by Khana Ratsadon (People’s Party) announcing the change of the country’s political system from absolute monarchy to constitutional monarchy. The message on the plaque read: “At dawn on June 24, 1932, the People’s Party on this spot gave birth to the constitution for national prosperity.”