The 2012 Olympics wrapped up last night with the closing ceremonies. To put on two weeks worth of the biggest spectacle in sports cost an estimated $15 billion for operating costs, the venues and infrastructure upgrades. As happens with all major sporting events where new arenas and stadia have been built, the question that arises after the event is what happens to the venues. Some cities have regular events and occupants of their venues. Other stadia stay empty most of the time.

So which are the most successful former Olympic stadia in the world and how good is the return on investment? To find out, we have a handy infographic.

Infographic via The Financialist. Click to enlarge.