Having previously hosted in 1900 and 1924, Paris will become the second city to host the Summer Olympics three times, after London (1908, 1948 and 2012). The Games will mark the centenary of the Paris Games of 1924 and the sixth Olympic Games hosted by France (three in summer and three in winter). The bidding process for these Games began in 2015. Five cities submitted their candidature, but Hamburg, Rome and Budapest withdrew, leaving only Paris and Los Angeles in contention. A proposal to elect the 2024 and 2028 Olympic host cities concurrently was approved by an Extraordinary IOC Session on 11 July 2017 in Lausanne. On 31 July 2017, the IOC negotiated a deal that would see Paris host the Games in 2024 and Los Angeles four years later. The formal announcement of this decision took place at the 131st IOC Session in Lima, Peru, on 13 September 2017.