Cost of beer at NFL games: http://www.businessinsider.com/nfl-stadium-beer-prices-2011-10

Are stadiums always a win? http://www.theatlantic.com/business/archive/2012/09/if-you-build-it-they-might-not-come-the-risky-economics-of-sports-stadiums/260900/

The Vikings make the economic case for a new stadium - http://www.vikings.com/stadium/new-stadium/economic-impact.html

Why would you want to host the Olympics - http://www.economist.com/blogs/economist-explains/2013/09/economist-explains-0

Old Olympic Stadiums - http://www.businessinsider.com/abandoned-olympic-venues-around-the-world-photos-2015-8