毛泽东批示:原样不动,尺寸不变据史书记载,天安门始建于明永乐十八年(1420年),具有550多年历史的天安门城楼,由于兵火战乱,长期失修,建筑结构已严重坏损变形,加之过度采汲地下水和城楼自身重量,主体己严重下沉。解放后,虽经多次维修加固,但未能彻底解决问题,尤其1966年河北邢台地区发生了6.8级强烈地震,天安门城楼损坏变形更甚。为确保安全,1969年底,国务院决定:彻底拆除天安门城楼,在原址、按原规格和原建筑形式重新修建一座天 According to historical records, Tiananmen Square was built in Ming dynasty for eighteen years (1420). The Tiananmen watchtower tower with a history of more than 550 years has experienced serious disastrous deformation due to the war on fire and disrepair over a long period of time. In addition, excessive mining of groundwater and watchtower own weight, the main body has seriously sunk. After the liberation, although many repairs and reinforcement, but failed to completely solve the problem, especially in 1966 in Xingtai, Hebei region occurred 6.8 strong earthquake, Tiananmen Square, more damaged deformation even worse. To ensure safety, at the end of 1969, the State Council decided to completely demolish the watchtowers of Tiananmen Square and reconstruct one day at the original site according to the original specifications and the original building form