A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

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

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

A private collection of massive steel monsters guarding a Texas pipe works.

The world's tallest statue of an American hero.

The world's longest known cave system.

One of the few surviving "Wigwam"-themed motels.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

A local scoured more than 1,000 acres for stone to create his masterpiece.