Tiananmen Square largest city squares in the world (440,500 m – 880×500 m or 109 acres – 960×550 yd). It has great cultural significance as it was the site of several important events in Chinese history. Outside China, the square is best known for the armed suppression of the pro-democracy June 1989 Tiananmen Square protests. The Tiananmen ("Gate of Heavenly Peace"), a gate in the wall of the Imperial City, was built in 1415 during the Ming dynasty. In the 17th century, fighting between Li Zicheng's rebel forces and the forces of the Manchu-led Qing dynasty caused heavy damage to, or even
20th anniversary of the 1989 Tiananmen Square protests of the 1959 Tibetan uprising, the 20th anniversary of the Tiananmen Square protests, and the 10th anniversary of the banning of the Falun Gong. The project established branches at every level of government, and was carried out in part through increased surveillance of potential dissidents. Among those who had been arrested were several human rights lawyers who had signed Charter 08 – including Tang Jitian, Lan Xuezhi, and Pu Zhiqiang; Jiang Tianyong, Li Heping, Li Xiongbing and Li Fangping were put under surveillance. Peter Simpson of the "Daily Mail" reported a huge security presence in Tiananmen, and all around Beijing,