Built in 1931, this small passageway is believed to be the first modern skyway.

A collection of pianos and more guaranteed to delight anyone interested in music history.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

These curious caverns have been home to mushrooms, gangsters, and disco.

This double-arched masonry highway bridge is the only structure of its kind in Minnesota.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

Inside this museum resides a boot fit for a giant.

This large midwestern cavern features impressive rock formations and an underground waterfall.

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

Dozens of large steel sculptures fill this two-acre park outside a former blacksmith's studio.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

This unique collection collects pieces of art etched into thin pieces of stone.

This small piece of Michigan is entirely surrounded by Ohio.

This restaurant proudly displays bread signed by the 39th president.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Train fans from all over flock to this railroad viewing park where three lines converge.

In northern Ohio, the glorious past of America's trains is on full display.

Known as "The Dome" this is the world's largest open air geodesic dome.

When a guy acquired a free church, he hauled it away piece-by-piece to make it the tasting hall at his vineyard.