This small, but long-running hobby club has built one of the largest model rail lines in the US.

Where old school Polish Chicago and young hipster Chicago live side by side.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

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

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

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

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

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

This overgrown Illinois water park offers a whole new type of adventure.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

Beloved bar home to musicians of all eras and reputations.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

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

A century-old network of freight tunnels underneath the city's historic business district.

Former hotel turned into haunted playground.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

A lush green oasis in the middle of Chicago.

A speakeasy takes on Chicago's drinking culture.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

Supposedly Satanic numbers adorn this preserved submarine sail.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

See just what life was like in a 19th-century prospecting town.