<P> The Charter was opened for signature on 26 June 1945 and was signed at the San Francisco War Memorial and Performing Arts Center in San Francisco , United States , on 26 June 1945 , by 50 of the 51 original member countries ( Poland , the other original member , which was not represented at the conference , signed it two months later ) . It entered into force on 24 October 1945 , after being ratified by the original five permanent members of the United Nations Security Council -- the Republic of China ( after 1949 , located in Taiwan and was later replaced by the People 's Republic of China ) , the Provisional Government of the French Republic ( later replaced by the Fourth Republic and then the Fifth Republic ) , the Union of Soviet Socialist Republics ( later replaced by the Russian Federation ) , the United Kingdom , and the United States -- and a majority of the other signatories . In the meantime , the atomic bombings of Hiroshima and Nagasaki took place on 6 and 9 August , respectively ; the introduction of this new weapon of warfare completely changed the security environment in which the UN Charter was promulgated . Most countries in the world have now ratified the Charter . </P>
<P> The Charter was opened for signature on 26 June 1945 and was signed at the San Francisco War Memorial and Performing Arts Center in San Francisco , United States , on 26 June 1945 , by 50 of the 51 original member countries ( Poland , the other original member , which was not represented at the conference , signed it two months later ) . It entered into force on 24 October 1945 , after being ratified by the original five permanent members of the United Nations Security Council -- the Republic of China ( after 1949 , located in Taiwan and was later replaced by the People 's Republic of China ) , the Provisional Government of the French Republic ( later replaced by the Fourth Republic and then the Fifth Republic ) , the Union of Soviet Socialist Republics ( later replaced by the Russian Federation ) , the United Kingdom , and the United States -- and a majority of the other signatories . In the meantime , the atomic bombings of Hiroshima and Nagasaki took place on 6 and 9 August , respectively ; the introduction of this new weapon of warfare completely changed the security environment in which the UN Charter was promulgated . Most countries in the world have now ratified the Charter . </P>
where was the charter of the united nations signed
where was the charter of the united nations signed
San Francisco War Memorial and Performing Arts Center in San Francisco , United States
San Francisco War Memorial and Performing Arts Center in San Francisco , United States