There have been threads before on here on the best pizza in Iowa. They say the best is at Wig and Pen in Iowa City. Even if that's true I can't believe a tomato pizza is the best that they ould come up with.
http://www.zagat.com/b/50-state-50-pizzas?utm_source=disqus&utm_medium=cpc&utm_campaign=desktopbuzz
http://www.zagat.com/b/50-state-50-pizzas?utm_source=disqus&utm_medium=cpc&utm_campaign=desktopbuzz