Lincoln Memorial, a landmark building in Washington. It is a Greek temple-style grand building made of white granite and marble. The 36 white marble columns surrounding the outer circle of the memorial symbolize the 36 states of the United States when Lincoln was president; the memorial has no gate, symbolizing the eternal opening to the world; the 6-meter-high statue in the memorial, President Lincoln sat solemnly with the company of many tourists, Looking and thinking~