Brazil spent billions renovating and building World Cup stadiums. Almost a year after the tournament ended, the nation is still trying to figure out what to do with them. The Mane Garrincha Stadium in Brasilia, Brazil (shown here in April 2014), was the most expensive of the stadiums — at a cost of $550 million — and is now being used as a bus parking lot. Eraldo Peres/AP hide caption

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Decathlon gold medalist Bruce Jenner throws the javelin during an Olympic competition in Montreal on July 30, 1976. AP hide caption

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A man watches sports broadcast on screens at a sports book owned and operated by CG Technology in Las Vegas. CG Technology is asking the Nevada Gaming Control Board to allow betting on the Olympics. John Locher/AP hide caption

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Boston is in the running to host the 2024 Olympics. walknboston/Flickr hide caption

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Italian military police officers stand in front of anti-Olympics demonstrators in February 2006 in Turin, Italy, on the eve of the opening ceremony of the 2006 Winter Games. Paco Serinelli/AFP/Getty Images hide caption

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American sibling skaters Ronald and Vivian Joseph perform the "death spiral" on Oct. 26, 1963, at the World Championships. The International Olympic Committee announced this week that the Josephs, who originally placed fourth in the 1964 Winter Games in Innsbruck, Austria, were in fact the bronze medalists. Bill Peters/Denver Post via Getty Images hide caption

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Shaun White of Team USA during a training session Saturday in Sochi. Jae C. Hong/AP hide caption

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Devin Logan practices during a ski slopestyle training session in Sochi on Friday. She says she doesn't stress about competing, even on a course that some have called dangerous. "What we do is scary in general," she says. "But we know how to do it." Cameron Spencer/Getty Images hide caption

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The Krasnaya Polyana mountain range, viewed from the Olympic host city of Sochi, shows off the stunning landscape of southern Russia. Richard Heathcote/Getty Images hide caption

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This cable car line in London, shown on Jan. 27, was built in time for the 2012 Summer Olympic Games in the city. It is taking 35 percent fewer visitors than predicted. Matthew Lloyd/Getty Images hide caption

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Graffiti covers a vent adjacent to the Athens Olympic Stadium in this photo from Feb. 18, 2012. Expenditures on the 2004 Athens Summer Games contributed to the country's debt load, which sparked the current economic crisis. Oli Scarff/Getty Images hide caption

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The Edge

The Games Are A Great Party, But Not A Great Investment

Despite the enormous cost of hosting the Olympics, many former venues are languishing away unused.

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Police in Sochi have distributed leaflets as they search for Ruzanna Ibragimova, an alleged "black widow" who may be intending to set off a suicide bomb at the site of next month's Winter Olympics. Natalya Vasilyeva/AP hide caption

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