One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

The world's third-largest scale model of the planets.

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

A river with some unusual, and occasionally dangerous, habits.

Cold War missile launch site which has been converted to a public park.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

Eclectic collection of rare and beautiful stones in a historic home.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

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

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

World's second largest particle accelerator, where nature reveals its secrets.

A six-story-tall golden pyramid, surrounded by a moat.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

The final resting place of the world's first nuclear reactor.

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

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

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Former hotel turned into haunted playground.

Cemetery featuring rare glass-fronted columbarium.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.