A wonderland of caves in eastern Iowa.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

The last location where Buddy Holly, Ritchie Valens, and J. P. "The Big Bopper" Richardson played before their tragic deaths.