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

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

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

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

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

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

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

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

These pretty kitties killed and ate as many as 135 railway workers.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

First planned industrial community in the United States.

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

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

The face of a woman pushes its way through the earth.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Cemetery featuring rare glass-fronted columbarium.

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

Former meatpacking facility turned vertical farm and sustainable business complex.

A European-style bath house in Chicago.

This historic hotel invented the chocolate brownie.

Former hotel turned into haunted playground.

The world's only known button museum.