The Tiananmen Square is a large city square in the center of Beijing, China. Outside of CHina, the square is best known in recent memory as the focal point of the Tiananmen Square protests of 1989, a pro-democracy movement which ended on June 4, 1989 with the declaration if the martial law in Beijing by the government and the death of several hundred civilians.
More on the tiananmen square.
This site will show you good visuals and explain more about the Tiananmen Square.
http://www.christusrex.org/www1/sdc/tiananmen.html
This site will tell you more history about the Tiananmen Square
http://www.history.com/this-day-in-history/tiananmen-square-massacre-takes-place