A science teacher's dream.

The faint remains of a Polish news empire still linger.

Theater has had many different incarnations but has survived the ravages of time.

Huge abstract sculptures of the Puerto Rican Flag.

These mansions date back to Chicago's days as a brewer's paradise.

An eccentric park and pool.

Internationally known record store and purveyor of "dusties."

Museum dedicated to the art of cutting and polishing stones.

A bloodstain from "the wound of the transverberation of the heart."

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Shop of curiosities with a dinosaur museum tucked in its basement.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

The park that the Chicago Stockyards built.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

A hollow cement depiction of time's inexorable effect on the human body.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

This elaborate Hindu temple is located in a Chicago suburb, but looks like it was transported directly from India.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The oldest experimental corn field in America is still creating better ways to grow crops.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.