A wonderland of caves in eastern Iowa.

Grant Wood painted some of his most famous works of art at this studio.

Elaborate hand-carved wooden clocks two brothers made in their spare time are on display at this handsome little museum.

Most comprehensive museum in America devoted to one ethnic group.

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

The Iowa state contender for largest pan in the world oddly only comes in second or so.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

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

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

An ornate Detroit church, left empty and ravaged by time.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.