The document summarizes the costs associated with hosting the Olympic Games. It discusses the origins of the Olympics in ancient Greece and provides data on the costs of recent Summer and Winter Olympics. London 2012 cost $14.8 billion while Sochi 2014's estimated costs were $51 billion. The bidding process to host the Olympics takes place 7 years prior. Operational and non-operational costs are broken down. While some past host cities turned profits, others like Athens 2004 and Sochi 2014 faced cost overruns and economic impacts. Corruption was also an issue in Sochi's $7 billion worth of fraudulent contracts.