The Security Council chamber is seen from behind the Council President's chair at the United Nations headquarters in New York City September 18, 2015. As leaders from almost 200 nations gather for the annual general assembly at the United Nations, the world body created 70 years ago, quieter moments are documented at the famed 18-acre headquarters on Manhattan's East Side. The UN, established as the successor to the failed League of Nations after World War II to prevent a similar conflict from occurring again, attracts more than a million visitors every year to its iconic New York site. The marathon of speeches and meetings this year will address issues from the migrant crisis in Europe to climate change and the fight against terrorism. [Photo/Agencies]