Beijing 2008: Estimated $1.71 billion
Athens 2004: $1.49 billion
Broadcasting the games doesn't come cheap. Just ask NBC Universal, which forked over $893 million for exclusive U.S. broadcasting rights for this summer's games.
That's more than the $613.4 million it for broadcasting rights of the 2006 Winter Olympic Games in Turin, Italy and the $793.5 million it paid for the 2004 Summer Olympics in Athens, Greece.
Half of the total broadcasting rights fees is allocated to the IOC, while the other half goes to the local organizing committee to help offset the cost of staging the games. NEXT: Advertising revenue