Video PlayerClose

Two children visit the Palais des Nations, the United Nations European headquarters in Geneva, Switzerland, Oct. 7, 2017. The Palais des Nations opened its door to the public on Saturday. (Xinhua/Xu Jinquan)

Two children visit the Palais des Nations, the United Nations European headquarters in Geneva, Switzerland, Oct. 7, 2017. The Palais des Nations opened its door to the public on Saturday. (Xinhua/Xu Jinquan)