15 November 1920
On 15 November 1920, the General Assembly of the League of the Nationsmet in Geneva, Switzerland for the first time. The League was an international body founded as a result of the signing of the Treaty of Versailles after World War I. Having installed its Secretariat in the Palais Wilson, the League made a mark on the urban landscape of Geneva by constructing the 'Palais des Nations' in which the League was installed in 1936, three years before the outbreak of World War II. On 26 June 1945, delegates from fifty countries met in San Francisco where they adopted the Charter of the United Nations(UN). Three months later the UN was officially launched when the signatory countries ratified the Charter. South Africa was one of the original founding members of the UN in 1945. In April 1946, the League of Nations handed over its properties and assets to the UN, the Palais des Nations being one of its jewels.
References

library.thinkquest.org (2002). ‘Treaty of Versailles’from Oracle Think Quest [online Available at www.thinkquest.org [Accessed 19 October 2011]| unog.ch (2011). ‘History: from the League of Nations to the United Nationsfrom UNOG: United Nations office at Geneva [online] Available at www.unog.ch [Accessed 19 October 2011]| United Nations Publication (2000). ‘The United Nations: An Introduction for Students’from United Nations CyberSchoolBus [online] Available athttps://cyberschoolbus.un.org [Accessed 19 October 2011]