Researchers have known for years that cities that host large sporting events like the Olympics generally spend more money and make less than anticipated. And investing in an Olympic Games won't necessarily lead to long-term economic growth or improved infrastructure.

Photographers and artists Jon Pack and Gary Hustwit set out to document what exactly happens when the games are over, and discovered varying answers.

Pack and Hustwit explored and photographed relics and remains of once-new Olympic features in 13 cities. Their photos, collected in a new book entitled "The Olympic City," show the varied remnants of Olympic Games gone by.