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

This cemetery is all that remains of a school for "wayward" girls.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Grand opera on a miniature scale.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

With 8,000 pipes this giant instrument is the most versatile theatre pipe organ ever built.

Former hotel turned into haunted playground.

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

This softly rounded mansion was built without corners not to avoid evil spirits, but to make them more comfortable.

A wonderfully curated used bookstore in an airport.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

This baseball diamond was home to the Rockford Peaches, a team featured in the hit film "A League of Their Own."

A unique botanical garden housed in three giant geodesic domes.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A place to eat for on-the-run agents and espionage enthusiasts.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

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

This unassuming city park is home to three different types of Native American mounds.

A roadside spring pooling in an old bathtub where anyone can stop and sip.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.